Here's a link to a thread that will help you sex the snake yourself or show you the kind of photos we need to see to help.
Most garters need a warm and cool side so that they can thermoregulate.
I try to keep part of my albino enclosure dark as they don't do like bright lights.
A Vet. visit would be great. When you contact Mark he can give you his Vet's info.
http://www.thamnophis.com/forum/bree...xing-pics.html