She slept almost all night today on an armchair in the living room and started coming out from under the bed during the day when I pet her. When she goes out she just keeps walking in circles as I pet her but doesn't dare going any further.

I stopped giving her canned food under the bed hoping that she will get out once hungry but she won't until I pet her for a very long time. It's like she needs some type of approval. Also every little noise sends her right back into her hiding spot. I don't know any of these brands, I will look if I can find any of these online or in local pet stores. I give her pouches of Royal Canin and CatNatura cans at the moment.

I do have a scratching post but as far as I can tell she has not used it yet, I can hear her clawing the doormat at night though. I tried catnip,she didn't really care about it at first but today I have seen her munching on the cat nip toy so maybe I can make more of them and leave them around the house. She has not used any of the carton boxes I have made for her as of yet.

I am not going to let her go outside. I could in theory but I do not have a garden so she would just venture straight on to a busy street. It's not easy to find a shelter cat that is indoor. Most usually require a garden or at least a secure, closed off balcony. I don't need to do anything when she is meowing and scratching the door because she usually runs away as I approach her. Tonight was the first night she didn't do it so maybe she gave up on it.

As for kibble ,I'm not sure if I should continue giving it to her. The shelter gave me a bag of Prins Vitalcare and recommended to feed her with that and eventually mix it with a different brand in the beginning as that is what she was used to at the shelter. I did, she threw up last night and there was no hair at all ,just kibble. I'm not sure if it was stress that caused her to vomit it up or the food itself is just not very good for her.

As for the two weeks policy. I have worked at another shelter before ,it's not the worst thing. Cats never stay in very long before getting adopted. And it just doesn't always work out between the cat and the new owner. They always end up finding a good new home eventually and are rarely being brought back. I can prolong the trial period if progress is being made. I am not sure what I am going to do yet. We still have a bit of time.

Oh and I'm living in The Netherlands. Kitty has no name yet, it usually takes me a while to see what suits them. (My last cat was nameless for more than a month until we decided to name him Pascal.) They made a mistake at first and thinking she was a male cat; gave her the name Brian. They didn't change it any more ,it's not like she is reacting to it either way.

Thanks for all your replies ,I hope she will continue on making progress.