I get a lot of asks like this (wondering how to increase the self esteem of others.)  This is probably the last one I will answer publicly, so please, if you are still having questions on this subject, send me a message off of anon so that I can respond to you privately, I promise not to publish them. 

Anyways, the best you can do for her is to love her as much as you can.  Her self esteem can’t rest on what other people think of her it has to come from herself in order for her to be truly happy.  I would suggest letting her know about fat acceptance and have her discover it and learn about it on her own.  The more she sees beauty in other people’s self acceptance and gorgeous fat bodies, the more likely she is to see it in herself.  If she has Tumblr, tell her about this blog and other fat loving blogs.  

Self acceptance doesn’t happen overnight and no one is perfectly happy 100% of the time.  She needs your love and support and hopefully she will come around to seeing herself the same way that you do.