It doesn't sound like you were friends, so I don't think she needed to tell you a thing. She was looking for a place that would accept her daughter. You obviously gave her enough information for her to find it. If you didn't want her to know or take a chance her daughter of her daughter moving in, you should have spoken up or simply said you weren't comfortable giving out that information without your daughter's permission, said you would have daughter call her directly and then "forget" to give the message. Sorry, I don't see the girl moving into the complex any of your business.