She may be a little jealous, I go through the same thing with my sister. We are both trying to lose weight but I am more into it than she is, so instead of complimenting me on my 18 pounds she ignores it (maybe because she has only lost 6 pounds in the same amount of time) . It can be a let down when you want people to notice that you are working hard. With the Phen my fuse is a little shorter, so instead of talking to her about it, I compliment myself around her (she may call it conceit, I like to call it confidence) and that forces her to acknowledge my accomplishment. Continue to focus on your goal and your actions will speak louder than any words you can say . Good luck to you, and stay focused.