Great to hear others ideas, and glad it's helpful, helly.
I tried acupuncture but it bizarrely irritated my legs. I have a monthly massage and my lovely best friend treats me (I can't argue!!!) to a 6-weekly pedicure (I find cutting my toenails scary as I can't feel if I'm doing it wrong and anyway have limited hand strength to deal with my horny toenails!!). Someone suggested a chiropractor to me but I'm very, very wary of that as my (and many other people's) PN originates in the spinal ganglia, where the nerves leave the spinal column. I just can't have anyone who's not a medical expert in my condition messing with my back!!
I'm going to try the Epsom salts!
I meant to mention the therapeutic professions. With PN she should be entitled to free or reduced cost podiatry which helped me to begin with, choosing appropriate shoes etc. I find tight-ish shoes in the daytime helps, but a lot of that might be to do with my balance. I had 6 months of neurological physiotherapy to help with balance and dealing with numb feet, exercises to do etc (also had specialist hand OT as I was very weak and clumsy for a while, though that's improving!). At night, I have a bed-arch which keeps the covers off my feet and lower legs - should have mentioned that already! - provided by the local district nurses, also a shower step and extra handrail on the stairs from rehab team.
If PN affects her mobility, she might be entitled to a blue badge for parking?
Pain is awful, I really think she needs to push for a very urgent referral to the pain specialists - sometimes pitching up in A&E (and yes, this is an emergency for her, she's becoming ill through lack of sleep and no one is helping her) is the fastest way. Have to admit that being a weak and feeble crying woman can help too, at the GP.
Her GP shouldn't be mentioning the cost!! NHS is free at the point of need! My treatment costs £5000 a month, I looked it up. The blood tests she's having (probably same as mine) can be £1000 a go, but that's NOT HER PROBLEM . But it does sound like they've done nerve conduction studies.
The three top neurological units in uk are London somewhere (can check!), QMC in Nottingham and the SGH in Glasgow. I understand there's also a pretty good one in Newcastle. She can always ask for a second opinion.
I'm happy to pm her, or pass on my email via you, helly, to chat more!