My boyfriend showers me with compliments, he is very sweet about my looks and my personality and he always tells me what he likes about me. I just don't deal with compliments very well, I find them difficult to take which means I always find them difficult to give sometimes. It's not because I don't think those things, i'm just... weird lol I don't know.
I sat him down and spoke to him about it, as you should do with your partner. I know it will be slightly different since it's you that is addressing the problem but it's the same situation. Tell her how you feel and sort things out that way, don't just guess why she isn't like that with you.