There was some pretty detailed about info about the foam in my thread but aside from being a pain to source, I had to go to multiple stores trying to get the right foam and they all kept asking me what I needed the foam
for.It is not styrofoam! it's just a thin sheet of comfy squishy foam, when it's in you it is very soft and if it's in correctly you wont even know it's there.
I did get quite a pain on one day from the foam as a nurse got blood on it, and made up another one which was incorrect size.
The nurses thought I just being whiny and gave me an endone pill. I think finally after about 8 hours a head nurse was able to fix it and Andy was fairly annoyed when he came in. In hindsight I should have contacted Andy myself. Suffice to say that should never happen to anyone else as they all know now how important this is now to use the exact moulds Andrew makes. I ended up having to stay in hospital over, I never really talked about that because I'm certain that I was the first and last to have that problem.
I was having to check every few minutes it was still in correctly. It was also meant to stay in when you pee. I ended up having to hold it in with a latex glove on every time I pee'd.
The foams don't work for everyone and you can start dilating instead of using foams on a case to case basis, one girl that had srs same day was me switched to dilaters almost straight out of hospital, I think I started on them a week early because the foam drove me bonkers.
To be fair I don't think any interaction with a vagina at that point would have been pleasant, either dilators or foams, so I can't say which I'd prefer but everything got easier when I switched to dilaters, sitting, walking, pee'ing everything.
Things get easier each day, best wishes for your friend.