first impression help

J
My SO's mother is coming to town and I have never met her, he told me she really wants to meet me and that he wants me to meet her too, I basically live with him, I'm extremely nervous because he is quite a bit older than I am and I'm still in college and he has a career, I'm worried she will think I'm a gold digger, also she isn't very good at speaking English, their first language is Spanish because they came from Cuba, how do I make a good first impression with the speech limitations coming from both sides.