I have a friend who works at a psych unit. The staff are told not to reveal their surname, for reasons like these. I think it´s a major boundary crossing, let alone telling her about it. Personally I would freak out by the idea of having a person drive by my house, who I knew were obsessed with me. It´s an invasion of privacy and...what´s next. ( You did sort of tell her at some point you wanted to break the door open to her bedroom (can´t recall the phrasing) while she was still married.