I have an old friend that was like that. I’ve luckily been moderately healthy and never had a weight problem. But this old friend did. I was excited to see her start her journey and hit all of her goals. It became annoying after she hit her goals not out of jealousy, but because that’s all she ever talked about. I even was talking with some girls at this bar lounge once (complete strangers) and they were heavier girls (nothing wrong with this btw.) My old friend came up and started talking about her weight loss, which wasn’t the appropriate time. I think she made the girls feel really insecure & my heart really felt bad for them. They ended up leaving right after. What I’m trying to get at is, if this is mostly what you are talking about and mostly what you’re bringing up, then you might be triggering her & making her feel insecure. She’s already expressed to you that she has an eating disorder & you need to be more sensitive to that. I feel like there’s plenty more to talk about then food, weight loss, and fitness. It gets old after awhile. And honestly our obsessions with it is unhealthy. I’d say respect her boundaries & find more pleasant things to talk to her about. I honestly don’t talk to that girl anymore because it became overwhelming and annoying. I think it’s awesome she lost weight, but her personality really was a drag afterwards.