A female behavioral health problem centered around self esteem and unhealthy relationships. What advice and resources can you offer to help?

My gf’s 48 yo sister is going to pieces today. She has a history of getting herself in unhealthy relationships based primarily on sex and superficiality. She is over-the-top on the sexiness meter thanks to numerous plastic surgeries but feels she only deserves a man who is a sex addict and strings her along while living a multiple-partner lifestyle (like 5 or 6 this past weekend alone). This trajectory has been going on for years, if not all her life, and my gf usually is the one to talk her off the ledge when things come to a head.

The problem is that when my gf talks to her, the sister is absolutely blind and deaf to any talk of introspection and instead defaults to statements about the guy, “How could he do this to me,” “I was there for him,” etc. It’s impossible, it seems, for my gf to get over, under or around this wall of obsessing about this particular guy or derivatives such as “I’m so lonely,” “I can’t get a date.” Her sister seems to have absolutely no concept of alone time or healthy platonic relationships or introspection or anything beyond a circle of activities to maintain her physical appearance to attract a guy and the drama of this on again, off again relationship with this semi-boyfriend (of a few years) of hers.

At this point, my gf has gotten gravely concerned, in that this episode has escalated to a point that fear for her sister’s life is warranted. Compounding this worry is the distance (sister is 450 miles away in Denver), and my gf’s progressively growing distress at having to play act in this bad movie over and over without it ever improving. Her sister has sought professional counseling in the past, but it didn’t help, probably because it was entered lightly (she never got beyond “I can’t get a date” statements”) and perhaps the therapists were not right for her.

This is starting to feel like an episode of Intervention. What do you recommend?

Thanks.