“Go eat some more”

So I’m recovering from an eating disorder I was 120 pounds and I’m now steady at 140 and started eating normally again which I’ve been really proud of. But, I got into an argument with my mother and when I told her I wasn’t gonna sit and argue she said “yeah go eat some more” and she doesn’t know about my ED and That really triggered me and now I’m crying and I just purged the dinner I ate I feel myself falling back into my ED slowly these past couple of weeks and this I feel is just what it needed to top off. Please give me some encouraging words. I really need them right now I feel very alone and disgusted with myself.