It could go either way:
If Chemistry is your weak point, you will love her as she goes slowly and gives lots of hints.
If Chemistry is your strong point, you will find she babies you too much or spends too much time on certain basics.
I personally loved her, as the other profs seemed to rush through everything, but I know a lot of people that were annoyed with her. On the whole though, she is very knowledgeable, helpful and caring