Looks Aren't Everything - Marisburg Chronicles, #5

Ash's dads have embraced their nonbinary self and Ash feels empowered in their blindness, but their dads still won't let them do anything alone. When Ash meets Theresa at a blindness conference, they long to slip the apron strings. Theresa, blinded in a terrible incident, has fully embraced her transgender identity. What she can't get past is her loss of sight. Meeting Ash, who is confident in their disability, seems like a gift, especially the first time they kiss. But Theresa hides a terrible secret and she's afraid between that and her disability she won't be good enough for Ash.
How can Ash possibly prove her wrong?