I started to post this as a comment on a specific story, then decided it makes more sense as an observation about tg fiction in general than a criticism on a specific story, because the problem I noticed (if it is a problem) is pretty common.

Namely, an awful lot of characters in tg fiction, when they find out about another character being transsexual or gay or both, have one of two extreme reactions -- total, instant acceptance, with displays of affection (if the author wants us to sypathize with the character) or extreme bigotry, very vocal and possibly violent (if the author wants us not to sympathize).