My best friend won’t stop talking about starving herself

And she knows I’m in recovery for anorexia myself. I’ve just moved away and sat somewhere else so I don’t have to listen to her. She’s been doing it for an about an year and loosing extreme amounts of weight in months , she isn’t thin but that’s not the point. She’s literally bragging about it. She needs therapy for it but I can’t make her see that yet. And tonight I’m struggling to even drink an energy drink she brought me as I’m struggling so much myself and she’s just made it even worse. She’s my best friend but I don’t think she realised how bad it’s made me feel. And she keeps going on about how she never eats before work. We did eat in the morning , we had subway , but that’s our main meal. I really don’t want to hear it.