Holy crap.
This isn't about not supporting your hobby, this is about not supporting YOU. She can dislike snakes all she wants, for whatever ridiculous reasons she wants to come up with, but putting you and your friends and your hobby down goes beyond the dislike of snakes.
For example, a supportive parent may not like the profession you chose, or may not like your boyfriend, but they'll still be happy for you if you're happy. They'll still help you out or keep an eye out for things that might interest you and/or listen to you blather on about it because it's important to YOU, and YOU are important to THEM.
This "mother" needs to get her priorities straight. :\