what would you do in my place?

hi I have a friend that we meant about two years ago she was in a relationship with a real loser in the end he told her he loved her but was not in love with her, so she moved to be close to her family we live some distance away from each other and I would visit her about every three to four weeks staying fri early morning thru sun mid after noon, well up until about a month and a half ago she mets her prince charming well first he is an alcoholic and lives with a woman as roommates to help her pay bills but this woman has three kids and likes to party hardy now my friend who knew this girl for about 15 years through her own daughter seems like a replacement mother slash boose companion slash now drug sharing along with dating this male roomate she has change so much in this short amount of time she now has little or no time for our friendship do I wait it out or cut my loses and lose this wonderful friend?