I'm really concerned about my sister. she's showing symptoms of anorexia. i don't like her but feel mom should do something?

Seek Help: As anorexia nervosa can be lethal, which means one could actually die, my best advice is to help your sister seek treatment from a person who specializes this area called eating disorders. Treatment helps and those who are not treated risk dying. I would enlist the help and support of your mother and any and all family members needed.