help for rescued cat

HI Everybody!
So this is what happened today, there I am making a sald when I start hearing a cat meowing I thought it was my lana(9 months old) I thought since my brother left she was outside and scared(shes an indoor cat). I opened the door and a dirty skinny cat gets inside. Shes really malnourished you can feel each and every bone one her body. She made her way to my cat bowl and started eating like crazy lol I grabbed her and examine her and decided to take her to the vet. The vet tested her and gave her a shot and medication for fleas.
My question is what can I do to give her a good and proper nutrition is wet food better in her case?
I havr another problem also. My house cat lana cant stand to be in the same room with her while the new cat is so sweet and is always purring and just ignored her. What can I do so these two can get along. I would like to keep the new cat I feel like she came and find me cuz she knew I would help thank you

Hello and welcome to TCS

Wow! She just walked in so she must have belonged to someone at some time. Poor thing. Thank you for allowing her to stay and getting her to a vet so fast. Cats do have a way of finding us don't they.

Do you have a room you can keep her in by herself. You can then do proper introductions to your resident cat. Here is a link to help with that: http://www.thecatsite.com/a/introducing-cats-to-cats. Since there was no immediate signs of aggression between them, introductions may go fairly quickly. You will want to see if she is spayed or get her spayed asap. It can be difficult to determine previous spaying on females though. That there is a good chance she belonged to some one at some point, she could have been done already.

A wet food diet is always best for any cat. For her, perhaps some wet kitten food for the higher fat content will help her build up her weight. http://www.catinfo.org is a good site written by a vet that explains why a wet diet is preferred.

Good luck with your new family member!

Thank you for rescuing this kitten.

For wet food, look for grain free wet food.  Some good ones are Wellness, Evo and Natural Balance; they are found in pet stores.  For a lower cost, more widely available, brands, look for Fancy Feast Classic varieties; FF makes a formula for kittens.  Friskies Pate are also good.

Insofar as introducing the two cats:  patience, patience, patience.  Your new kitten should be isolated for a while, just in case she has (for example), a UTI brewing.  Has she been spayed?

Meanwhile, you can feed the kitten behind one door, and your cat behind the other side.

For more tips, hints, see this article.

Did you tell the Vet this new cat was a stray who just walked into your house?  Did they check her to see if she was microchipped?  (We had two boys land on our doorsteps, and it turned out they WERE chipped, so we were able to contact their owners.  We adopted them anyway, but at least at was with the previous owners knowledge and permission )

I would try to make sure no one is looking for a lost cat before falling completely in love with this baby...maybe just check Craig's List or check signs around your neighborhood to make sure no one is looking for a lost cat, but make sure they can describe her to a T before handing her over.

In the meantime, it sounds like any food is better than none, but I wouldn't let her overeat  as she might just throw it up again.  But as Katluver mentioned, canned is probably best (for ALL cats, really).  Maybe you could just give her an extra meal or two until she fills out.

Introductions can be tricky, but just go slow and easy.  Since your resident cat is younger, it might be easier.  The info in the above link should be helpful.

Good luck, and thank you for helping this kitty out