Complex sentence: Feminist organizations that include straight and non-heterosexual women are often more welcoming than non-heterosexual specific organizations, with the largest exception being gender segregated shelters and sexual assault support centers.
Split into simpler sentences: Feminist organizations that include both heterosexual and non-heterosexual women are often more welcoming than non-heterosexual specific organizations. The largest exception is gender-segregated shelters and sexual assault support centers.