Maybe it'd be best for you t' try an' explain the situation 'fore she comes out? Y' know, have a talk with the hubby an' such 'fore he meets her, so's he knows the situation and what's goin' on 'fore she comes out and meets 'im.
Then maybe can y'all have a talk with her and try tellin' her that this man/the hubby won't be lookin' for pleasure from her and that she doesn't have to, nor should she, try to pleasure him? Or somethin' like that?
Try to have as much understandin' as possible 'fore she comes out. Have the hubby understand her situation, and have her understand that she doesn't have to (and isn't t' try to) pleasure him.
Sorry if I'm not much help. We don' have a little like this in our system. (We have Cassidy, who I have to look after, but she ain't sexual. Destructive, usually seen as disturbing, and possibly havin' Antisocial Personality Disorder, but nothin' sexual).
~Marie