I feel a little differently...  Yes, you have the right to be/look however you feel comfortable and she does NOT have the right to be rude or nasty about it.  none of her business.  Although it is possible that she is just such a selfish person/bad mother/immature individual that she does not realize how amazingly far out of line she is.  She might think that part of 'caring' about you means to pressure you about your weight.  She might just be doing a REALLY bad job reconnecting.  I think you should say to her 'look mom, I know that you love me and want the best for me, but you need to realize that I am an adult, and if you ever, EVER mention my weight again, I will take that as you NOT loving me for who I am, and I will be less likely to want to see you."  my mom pressures me about my weight, likes to buy me clothes that are either 6's or 16's....  (I'm a 10)...  and says things like "wow, you look great, your butt looks much smaller than it did last time'... but I haven't lost any weight, and the next time i see her, she just sort of folds her lips in, and looks disapproving...  I'm sorry your mom is making you feel insecure.  I do think that therapy might be just the ticket, and if she's not clean and sober, maybe waiting until she is, before you let her in your life, might be a good thing.