My daughter gives me a hug goodbye

Last week, I had asked my daughter if her and I wanted to work on her homework. I had learned that she(my daughter) isn't doing so well in school. I guess her grades are dropping drastically. I felt confused. On one hand, I was reluctant to help. I felt that this is the actions of her mother. In other words. If I cannot be there full-time all the time, then I don't want to help. On the other hand, I felt compelled to help. I felt in my heart, that this is still my daughter. So I asked my self, if the other two had the same situation would you help? I said of course, then I said then why not with her. So I asked my daughter if I can help her with here homework. She declined. That hurt me a little bit. However, I also decided then to accept it and not to push the subject. But, at the end of the session, she turns around and gives me a hug. I thought that was pretty good.