Search Results: different places to travel

Hey y'all! So I'm currently studying abroad in Spain right now, and I'm trying to take advantage and travel to as many places as I can while I'm here. I've had plans with a girl from my home university (who's studying abroad in a different country) to meet up in Vienna from Dec. 21st--27th, and from there I continue on to London and will meet a different friend for the rest of my euro trip. Well I asked her again today if she was still coming (cause she buys all of her tickets last minute--which stresses me out), and now she told me she doesn't think she will go. I'm super annoyed that not only is she cancelling, but she's waiting four days before to tell me--and that's only because I asked to double check... but I guess that's besides the point.

I'm definitely more on the introverted side and my anxiety (clinically diagnosed--not just saying I have it cause I'm "nervous and stressed" sometimes) really does ramp up when I'm in new, unfamiliar places (especially a new country where neither of the languages I speak is the dominant language (I know odds are good of a decent majority being able to speak it though)). I really don't want to cancel the trip, because more than likely I won't get my money back for the flights AND I'd have to buy a new flight to London, and I do want to visit Vienna. However, I also don't want to be on edge the whole time, and knowing myself, choose to stay in the hostel instead of venturing out due to fear. Cause if I'm gonna have to spend Christmas alone, I'd rather do it in my apartment in Spain... I think?

Any thoughts, or recommendations?