Everyone on team invited to party but me

I am on a sports team, and one of the team members is having a party for team members as well as others. She used Facebook to invite everyone, but did not invite me via Facebook. However, the Facebook announcement says "Everyone is invited." This person has never been very friendly to me, so I am not sure if it is an oversight or not. Should I just go to the party, and take a gift and assume it was an oversight, or should I miss out on the fun?