My family is a mess all the way around... In that mix is abandonment, abuse, people cheating on each other (basically openly), alcoholism, etc... They are some very high strung people, they throw out lots of crazy drama. If they cant find any, they create it... In all that sickness, I have to love them as much as I can.
I sort of have some deep issues with lots of my family... One of the worst is for them to be drunk and fighting on Saturday night... Only to come home from church on Sunday telling others they are going to hell for not believing as they do... That one thing makes me want to puke. How can people not notice being such hypocrites? Next level is sometimes some open racism, and homophobic slurs, and the fact they are so closed minded about EVERYTHING... It turns me inside out it sometimes...
I openly and purposely keep my distance as much as possible. I'm hopefully about to put a 1300 mile distance in the upsetting messes that some of them always seem to drag me into at times. Toxic is toxic, and some people seem to "thrive" on it and in it... Not me at any level. Its my kryptonite.
I hope your friend works things out at some point. I also hope you are there as a friend that is a counter balance of trust for all the stuff that can go on in these instances.
I try very hard to NEVER get involved in other peoples problems unless I am asked. Even then I simply stay very far in the background with my mouth shut, only to try and figure out how to help the situation and never enter the situation, or GOD forbid become part of it... Geez
Treading in other families issues has to be up there with the very "iffy" if not totally off limits for me... I have all the problems I could ever want, without dealing with someone else's : )