Mr. Red,

How is she going to know that the dog visited, and why will it matter? She has a lot of much more serious things to worry about, and you are just a friend, helping out-- if she seems upset, it won't be about the dog, it will be just frustration and desperation about having to deal with this situation--You are a good, good, person for caring and helping out---I have a feeling there will be more for you to do, though, sadly, no one can undo what has happened, and it will be difficult for both mother and daughter re-adjusting--

Best wishes for everyone involved in this difficult situation--