should i ask this girl to come over for christmas?

so we are both servers and both get stuck closing so we talk a lot. but im 19 and she is 22 and i have not had a lot of experience with relationships. but im not sure if she is just being friendly or not when we talk we both talk about our lives she asks me about mine ill ask her about hers. she also touches my shoulder a lot and messes with my face. she also came over from Greece and lives alone so im sure if i asked her she would say yes i just dont know if she wants to be friends or not