Booked to go and stay with friend a in her dads flat over in Spain in August. Was just going to be us two as only one spare bed for us to share. We have friend b in common but the last couple of years friend b and I don’t get on we’re now at a point where I don’t want to be around her at all due to her nastiness towards me. Flights have all been booked for months and now I’ve been told that friend b may be coming as she’s been invited Friend a knows how I feel about her. She still may not come but if she’s does I will want to cAncel but can’t as everything has been paid for including tickets to event train and taxi costs