I agree with Aquiel, the age that you wean your kittens really just depends on the individual litter, sometimes even the individual kitten! I got my two boys from my mother's back yard where a feral cat had kittens...Hutch left his mom on his own when he was less than 5 weeks old, and was eating solid food. Boots, however, hung around his mom for another 2 weeks. I have also seen kittens wander away from their mothers at 4 weeks and not come back, and seen some fight like the devil at 3 months when you attempt to take them away from their mom.
And about her not being sure whether the kittens were one or 2 months old, I took a glance at her profile and discovered that by her age, she is *probably* living at home, which leads me to assume that her mom was probably the main one in charge of the kittens. And, being a teenager, I'm sure she has a busy life and the exact dates of the kittens births are probably not the first thing in her mind!
So for those of you who are jumping all over her back for not knowing the exact date, take a deep breath and relax. She's just asking about how to make her momma cat feel better, not asking for lectures on spaying
(not neutering...that's for male cats lol) and people implying that she is irresponsible for finding the kittens a good home.
I mean really, at least she isn't putting them in a pillow case and throwing them in a river, right?
Goldielocks: I'm sure your cat will feel better soon, she's probably just a little depressed and missing her babies. When we take the kittens away, we don't really give the mom a chance to get sick of them. But she'll move on in a week or so, just be sure to give her lots of cuddles, and good food!