I do not understand why they haven't been reported to the police.
Not asking Sister Health to do this as they have enough to cope with, but surely there must be women of some sort of feminism in Brighton, the Brighton area who can report them.
This is stalking.
This is intrusion of privacy.
This is encouraging violence against women.
This is intimidation of provision of women only (sex based) support service which is legally allowed in the UK.
Presumably there are no local politicians in Brighton who could be asked to investigate.
Is there a Women of Sussex group?