Although at-home detox is very risky, a problem we have in the States is that once something like that is mentioned anywhere in your medical records, it is more difficult to get insurance etc. Yes, there IS doctor/patient confidentiality but if you apply for health or life insurance you have to disclose things like that. It's very frustrating because, it seems to me, if we need help we should be able to get help we need and not need to worry about other things like insurance.
I am so happy your friend maybe it SAFELY through detox with the help of her doctor!