I don't try to change his views. He lets me have my snakes, I respect his comfort zone by keeping them in a place he can avoid and not trying to 'fix him' against his will. Leaving him alone to de-stress, take things at his own pace and not 'guiding him' into doing something he wants to do (that's just manipulation) has worked out just fine. He's gotten more comfortable knowing the issue isn't going to be forced on him, and now occasionally chooses to be around them in an observational capacity.

I think, much like ball pythons and feeding, overoffering can make the aversion worse.

If SHE expresses interest, forget babies that can be nippy. Find a placid juvie or sub adult and hold it in her presence and let her make any and all moves. ONLY IF SHE IS INTERESTED and makes suggestions HERSELF.