What should I do. What would you do?

I bought a puppy from a young couple about 4 months ago. I stopped by to give them some puppy food my puppy didn't like since they had two pups left from the litter & not much money. Any who...Upon this meeting I learned the young lady (30) with a 4 month old baby and 4 small sons. The oldest is 7. Has severe emotional problems. I really don't want to get involved since I have been hurt before by so called "friends". I am not going to befriend this person to become a Showfer, babsitter etc. And I really am not the strongest person in the world. Myself, I have been hospitalized twice with anxiety . She called me and invited me to come over anytime. But it's such a downer I don't care to be around people like this. My own family is severely dysfunctional and I have minimal contact with them in order to keep my sanity. Only visit them during the holidays. I must take antidepressants . Well, I was driving down their street and she happened to be looking out her door at that very moment and I didn't want to be rude to I pulled in the driveway. She gave me a big hug and was crying as usual. She told me she shot up some drugs and didn't want to do it but she was so mad at her husband. He is 34 and going to college here for computer repair. What do I do? Call the law and have her jailed where she will get no help at all? And have her kids taken away. I really don't want to get involved. Or cause problems for her family. I feel so bad for her, her husband and especially those poor little kids. She says she has an appointment Friday with the mental health department.