HiCustomer Thank you for asking your question on JustAnswer. By the way, it would help us to know:
-What are your ages?
-How long have you been dancing together?
-Have you asked her to do things outside of dancing?
-Do you dance well together?Thank you again for trusting us with your problem. Please reply as soon as possible so that we can finish answering your question.
Yes it could be the age difference and also the gender difference. Try to include her in more things that don't make her feel awkward, when she doesn't do well encourage her, try to be a big brother so to speak to her someone she can confide in and trust in she may be going through something separate from dancing and the only way to find that out is to gain her trust. Ask her how she feels about being your partner and dancing with you. Dancing together and competing together is almost like being in a relationship or marriage everything is 50/50 and there sometimes has to be a compromise in order to have a healthy relationship and communication is the key maybe she feels that you do not communicate with her enough. Ask her about her family and her life outside of dancing open up a dialog with her so that she knows you see her as a person and not just a partner.
I believe it may be worth it you never know she could be a really good firend you just have to break through her shell and break down those walls. If she hasn't been mean to you then there is hope just give it more time and patience.