My kitten is about 10 weeks old now, and we adopted her from a shelter when she was 8 weeks. She's a feral kitten, and is very well taken care of. In my home she has plenty of toys to play with, enjoys jumping around on my furniture, etc... She has always been a friendly/playful kitten, and anytime that I call her name she'll come to me and meow. She also purrs very loudly when I pet her behind the ears or on the belly.
Today I noticed a very odd behavior in her, and it only happened in the afternoon. She went into hiding... I guess is the best I can describe it, and when I lured her out with some treats, she seemed to approach almost with caution. Usually she jumps at the opportunity to get a treat. When she did finally get to me, she seemed like she wanted the treats but wouldn't eat them out of my hand like she always did.
Later at night I picked her up while sitting on the couch, and started to rub her belly like I always do which usually either makes her sleepy or start purring, and instead she let out a VERY odd sound. It wasn't a meow, and was more like a noise I've read described as "trilling?" When she did meow, it was very soft, almost like she was afraid to. She also refused to be held, and would leap out of my hands, but then immediately look up at me as if she wanted me to play with her. Even now, when she would normally follow me into my room to sleep on my bed, instead she's hiding underneath my dinner table :(
I'm very worried because I had a kitten some time ago, and one day when I wasn't paying attention she hurt herself and long story short I ended up having to put her down which broke my heart very badly. I recently got the strength again to have another pet and I'm very worried that something may be wrong with her. Unfortunately I'm not in the greatest place financially to rush her to a vet, and was simply wondering if anyone could offer any insight as to what may be going on.
Another thing is that my g/f bought her some little mice that have catnip in them. I'm wondering if that has something to do with it? She also hasn't been spayed yet, so another question is whether she's simply in heat at an early age? I have another kitten who's very young, 4 weeks old, and is a male. So I don't know if maybe it's simply a behavior towards him? It's just very strange to see her acting this way and I'm sure that I'm over-reacting, but I just want to make sure she's OK.
Any help/advice would be very much appreciated!