You should ask her directly. She's the most qualified to answer your questions. I doubt she would pass up an opportunity to help you understand her better.
As for the hugging part, maybe, just maybe, it actually means she feels comfortable enough not to hide her reaction from you. Personally, I pretend it doesn't bother me when I receive a hug from a friend. When my family tries to hug me I just tell them to f**k off. They know it really means "I love you"