Question Author
Interesting answers, many thanks.
Did take her to an all day pharmacist on Sunday, and they had never heard of the drug Ivermectin which Mr Google advised me to ask for. Came home with some Derbac liquid to try.
Gave her a tube of Aveeno in case the Derbac causes dryness.
I can see marks on her face quite angry, but nothing moving.
Done my bit over the weekend, up to her family now I think to sort one way or another.
(Certainly learned a lot about mental conditions and parasites, now I'm itching like mad)
Thanks for all replies.