Most kibbles have around 400 calories per cup, so 1/4 cup would have 100 calories, which for a 5-pound cat is 20 calories per pound. I'd expect an adolescent to eat more but that's certainly sufficient, and if she's given all she wants you can't exactly make her eat more than she wants.
that its isn't an obstruction and she feels better soon!
that its isn't an obstruction and she feels better soon!