It depends on what type of RP she has as to whether she can pass it on at all. One form impaticular, can only be past on through the males Y chromasone.
I can relate to what she was saying, running in to things, being coverd in bruises and bumping into people at the shop (and being asked, what are you blind or something?) LOL... I was at that stage about 8 years ago. It will be a tough transition for her, the time after diagnosis is the worst, but I think she has the personality to get through it.
There is alot of research being done at the moment, with both stem cell treatment and the bionic eye. There is a real hope for some restoration of partial sight within ten years.
Fingers crossed.....
I might have to change my user name to bionic snake. LOL.
P.S. I hope you find your duck cracks....