What do you do when your best friends wife is rude to and shuns your wife?

My husband has a very good friend whom he fishes tournaments with and enjoys spending time with. We also fish tournaments as a couples team with them. THis requires quite a bit of time out of town on weekends with them. During our times together, she is very rude to me. She is very social with my husband. she will call, text and message him. SHe does not call or text me. When it is just her and I, she doesnt talk and just plays on her computer. I have made multiple efforts to have conversation and have even extended invites to lunch and movies and such. I did confront her a year ago to see if I had offended her in some way. Her response was that she was protective and possessive of my husband and before me it was always just the three of them and she liked it better that way. My husband and I continuously have heated discussions because he doesnt want to hurt his friend, but I dont feel she should continue to be so rude. I dont want to come between my husband and his friend either. Less time with them is not an option because of the tournaments we all fish together. Other couples that have gone along on these trips will no longer go if she will be there. Suggestions?