Logan,

I don't know about your relationship with your Mom, but if
these comments hurt your feelings (they would mine), I would
certainly have a heart to heart with her & explain how you feel
when she, or others say thoughtless things about Lilly's weight.
If she can "speak her mind" why can't you? I sometimes felt like
a little kid again when I would try to explain my feeling to my
Mother, but she loved me as I'm sure your Mom loves you, and she did understand. Tell her how this makes you feel.