Thank you very much for all the responses.
I'm going to show her all the links and treat her to a pair of whichever she likes.
cakeninja she's taken terbamafine(sp?) for 5 months with no improvement at all. Obvs after all the varnish-type treatments, vicks etc didn't work.
Eight of her toenails are literally black, I feel so sorry for her and she's been like this a long time. It gets her down cos she feels dirty.
newlife it sounds like you had a terrible time! Yes I worry about it turning into something really nasty, hence why I want to do whatever it takes to get rid. I don't think we've tried neat teatree oil, so I'll order some and give it a go before I shell out, thanks. Luckily there's no problem at all with the skin on her feet, just her nails.
cresset I would be seriously pissed off if I was your DH! It's a seriously expensive treatment (for me, anyway). I would be absolutely gutted if it didn't work.
I'm shocked that the nhs don't offer it really, cos what do they do when nothing else works? Surely they don't just leave people in a state? God knows.
Thanks so much for the links x