Dear Prudence is Slate’s advice column. Submit questions here. (It’s anonymous!)

Dear Prudence,

My estranged sister, “Taylor,” appears to be at the end of her life, in her 30s. Taylor is intense, driven, and ambitious with an eye for detail. She was a teen athlete when she developed anorexia. Now, coupled with substance abuse, it seems to be taking a toll. She was in and out of residential treatment as a teen, but when she became an adult, no one could make her go. Two years ago, I tried again to talk to her about therapy, and she cut me out. Our family was never close, but I’m the last one she cut off. I go to a support group for the families of addicts, and I’m now on a therapy waitlist.

Taylor has a job with a public face, like a local newscaster or niche influencer. She p

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