I am about to get married and trying to work on a realtionship with my two new stepdaughters, I get along very well with the younger one, she is 15 and a very sweet girl. His oldest daughter seems to be very stand-offish, she is always giving me dirty looks, hardly will not speak to me, and if and when she does its usually a rude comment. There is a 16 year age difference between her and I, and I keep telling myself to relax and take a breath because I do not want any tension between us or at a family gathering. She kinda acts like she looks down on me, or I am not good enough.