Cause no one should have to eat in the bathroom. (frantic eater)

I've had my cat Oliver for most of his life. He was approximately 5-6 months when I officially adopted him. Before that a friend of mine was fostering him and his brother and sister. He's about 3&1/2 (we're not sure when their birthdays were). Last October we adopted a female kitten around 6 months old named Olivia. Their introduction was rocky at first but I was shocked how quickly they became acquainted with each other but they play/fight pretty rough. There's a lot if whining from Olivia and the occasional hissing from Oliver. But other than that they co-habitate pretty well. The only issue I'm having is meal times. I have to feed Oliver twice a day  a 1/4 cup of food(Vets orders) but when I try to feed them both in the kitchen Olivia is super "aggressive". Not violent, she gets so worked up and she starts eating frantically and won't let Oliver  eat and he's such a calm kitty he backs off and lets her. She gets so crazed that she's knocked the bowl out of my hand throwing kibble every where on more than one occasion. So I moved him to the bathroom and it's working out , he eats quietly, she "inhales" and then waits for him. I am feeding them both the same amount of food twice a day. I'm worried this frantic eating will eventually be harmful to her and potentially him. She also gets like this when we are eating. She will sit on our shoulders and try to get our food or stare at us from the coffee table. We can't leave anything out. I turned my back once  for a second while I was cooking and she was frantically gnawing on a freshly baked potato. It's like she is always hungry. She is a frantic bottomless pit. 

So my question is how do I get her to eat calmly so that I can eventually put them together to eat. And so that we humans can eat a peaceful meal for once. Cause no one should have to eat in the bathroom.

Thanks in advanced!

Your girl is truely very very hungry.  She is young.  Sub 1yr of age you should be feeding as much as they will take, little and often, say 4 meals a day.  I know she is about 1 year old now, but she has a deficit to make up for, and also now a fear that food is scarce - hence the desperate and 'aggressive' behaviour.  Because she has a food shortage fear, this is something you will need to tackle before anything can settle down, and actually, she is the one to be focussed on in this situation (your boy will be just fine getting his food served extra special in his extra special dining room - cause that's how you can present it to him).

So feeding your girl.  The first thing I would do is try offering her food that is more nourishing than kibble.  Kibble is just not suitable as food for cats, who need animal sourced food (read the ingredients of your kibble pack - not much animal stuff in there, and most is really really poor quality, like meal, which has the nutrients processed out by high heat).  

It is possible she will either wolf that wet food down, or take a little while to understand it is food as it is not what she is accustomed to - but given she has tried to eat a potato, I'm thinking she will be eating heartily!  By wet food, I mean either canned - just read the ingredients and choose ones that have ingredients from animals, not plants, or raw.  Or a variety; some canned, some balanced raw, or mostly canned with some treats of raw meat or boney chunks that are so good for their teeth and will get her some more calcium (eg: a chicken wing, a cut up chicken neck, cut up chunks of rabbit).  Don't be scared of meat and animal fat - cats need a lot of both by human standards - so you can even offer 'treats' of offcuts of fat and skin when you are preparing your food (served raw of course).  And start feeding her frequently - 3 meals a day at least.  My guys are older than yours, and eat as much as they like, fed at breakfast, mid morning snack, lunch, dinner, and supper. One eats mostly raw - he looks like a 100m sprinter.  The other eats 'raw without the thaw' jerky (because we had an early illness that really skewed her perception of food)....its ok for processed food, but she is not athlete shaped, yet neither is she overweight.  I say this because if you feed what is biologically appropriate for a cat, then you will have no issues with them becoming overweight - think about it like for a human, if you eat as much as you want of what you are supposed to have, you are too full to get fat!  And on that note, once your girl starts to eat the more nourishing food, and has the scarcity fear allayed by constant abundance, you will see her need for food regulate by itself.  Give it about 6 months.

Heres some excellent reading, and best wishes!

the psychological aspects of food scarcity (really wonderfully written!) http://www.wayofcats.com/blog/the-hungry-problem/138

cat nutrition by a vet who knows about nutrtition - most don't, and hence the advice (erroneous) from your vet: http://catinfo.org/

She's frantic because limiting a kitten to only 2 feedings a day of 1/4 cup is simply not enough. Feed her several times a day, as much as she wants, and she will eventually get enough to eat and feel calmer. This is really a nutrition problem, not a behavior problem.

Yes I am just echoing what the others have said.  At 6 months kittens should generally still be eating as much as they will take but DEFINITELY more than 1/2 cup of food a day. She is probably starving. She should also still probably be on kitten food for the extra nutrients, not adult food. Please start feeding your kitten more.  

to what the others have said. Try feeding several small meals daily, perhaps even slightly increase how much food she gets per day. And offer canned food. Canned food is more filling to some cats. Be sure to read the canned food label and buy the ones that are complete diets as some are only supplement / complement food (ie treats).

As an aside, I have to feed my Aby breakfast in the bathroom while I'm brushing my teeth. Otherwise he'll gobble his breakfast up and push my other cat away from her bowl to eat her food Both cats get the same amount of raw food. Feeding dinner to both cats together isn't a problem

Thank you everyone! I had no idea since she's a chubby girl. My poor kitty, I've been starving her! 

Please update us on your kitty's progress and hopefully, she is better now!