...you know if you need anything, just let us know.

My wife works as a child therapist, and she's convinced that most of the problems that her kids are having really are the fault of the parents - but the parents don't want to hear it. This is most definitely not the case in your case, and if anything, it should reaffirm your feeling that You are Doing the Right Thing, no matter who else is screwing up their lives.

Take care of your daughter, and give her all our love.