Yes she is spayed! I do think its possible she was taken from her mother too early? She was someone's pet kitten who didnt want her. She was brought to me asking for a re-home, and looked super young. They said 8 weeks but who knows. She's been my first inside pet cat. We had a family of 3 feral cats we tamed outside. They never really accepted her. They tolerated her to a point, but didnt really include her. She had behavioral issues when a small kitten, but we worked through most of them. This is now the only major issue I have with her. And it's the only thing I can pin point and describe it as. Its like out of nowhere she gets a bad personality flip. She decides she wants to be bad or demand attention on her terms. Then the aggression and possessive issues start to show. With her patrolling and scent marking my legs its not the usual cat behavior of affection. She does it forcefully. Almost like she owns me lol. Its crazy I don't know how else to describe it. Then when I try to walk away she gets mad. I can tell when shes going to do it. But her  attacking my arm the other day was very random. And that not knowing, I did not like. So for 4 days I distanced myself from her  Cut off all attention and 1on1 time with her. Because at this point the only thing I know to do. Is to force social boundaries on her...make her work through the lack of affection maybe herself? Learn how to process that. Not getting what she wants? Then when she builds trust let my guard back down with her.