Depressed cat

We have a sweet 11 month old cat named Annie. She was an orphan. She has never cuddled or shown a tremendous amount of affection but is very intelligent and attached to my husband and myself. On Wednesday we bought a kitty from a foster home connected to a shelter. She is spayed, has had her shots up to date and came with a folder of records. She loves to cuddle and cries if we try to put her in a room by herself in order to keep the two kitties apart for a time until they adjust to one another. Since Callie, our new baby kitty cries when she's alone we have allowed her to sleep with us. She sleeps all night. Annie never sleeps with us and that is her choice. She would remain under the bed close to us if we allowed but she becomes too mischievous in the night. We have put her with her food and water in the front bedroom where she can look outside from her tree. She has an ample amount of toys. Annie follows Callie everywhere and watches her. In the beginning she acted as though she wished to play with Callie but Callie is very tiny and is a bit frightened in all probability. Once in a while the two cats will exchange a sniff or a touching of paws. However, last night Annie threw up for the first time since we have had her when she was 6 months old. She is not eating and seems depressed. We bought her a new toy and we are spending extra time trying to play with her. She's lethargic and hasn't eaten anything since yesterday. She uses her litter box and drinks water. I feel so sorry for her and have been crying off and on. We thought Annie needed a companion and now that we invested time and love into one for her we are having second thoughts. Perhaps we are not giving Annie enough time to adjust. Any advice would be helpful.

Oh, dear, Malinka, I accidentally deleted your account! Please reregister!

It will take more time, just keep giving both girls equal attention, and make sure each one still has a place she can hide from the other one. Keep an eye on it, make sure they are both eating and eliminating normally. Did you add a second litter box? That is important, so each girl feels she has her own spot to do her business.

I wouldn't go more than a day or two of not eating and drinking. Kittens can do down hill SO fast. Karen is right about the litterboxes. One per cat.

I'd take her to the vet just to make sure she's okay and isn't dehydrated. I'm a little surprized since kittens are so easily to incorporate into a household with an older (not much, but older) cats.

I definitely think a vet check is in order. It may be nothing or something easily treatable.

Please keep us posted!