She & landlord will need restraining order. In California, the landlord would be unable to use this to end rental agreement with Renter, but in UK, the landlord might be so fed up with the problem that the Rayhana might loose her appt. This endangers her safety & livelihood. She’ll need to file with courts & police severing contact with her family. May need pro bono or civil lawyer to “divorce her” from her family. If her fam members are breaking the law,they can have visas revoked.

I have no idea how things work in the UK, but here, her landlord could
file charges of trespassing with the police, against her family.
She could file a restraining order against her family.
If she is so worried, she should get the media involved.
I'm not signing a petition because I don't think my signature would make a
bit of difference. I can't save her. She needs to do whatever she has to do
to save herself.

Another religious rights issue? Sort of like "honor killing". Maybe start a petition in the UK and US.