My crazy cat

I've decided that my cat must have abandonment issues. She is literally crazy. You can be petting her and she will randomly start biting you! Her tail seems to be set on an automatic setting where it twitches constantly. It twitches even when she is purring sometimes. But I do wonder if all of this has anything to do with the fact that she was lost as a kitten and someone found her in a flower pot on their porch when she was 4 weeks old. I raised her and sometimes I think she considers me her mother, but then at other times I have several scratches healing on my hands and arms and I wonder. Despite all that, I do love her and she is my baby. She sleeps on my bed almost every night. She's crazy, that is for sure, but maybe he just gets that from me. But they do say that insanity is hereditary, you get it from your children, maybe the same is true with pets. Haha!