making/keeping friends in adulthood?

Bl
So I recently met this girl. We both live in Australia but I'm originally from America and she's from Canada. I'm finding it really difficult to maintain contact. It's hard for us to think of things to do. I'm really tight on money as my husband and I are in the process of building a home and spending money on activities is really slim for me. She seems very outgoing and treats money as if it grows on trees. Anyway.....idk what to do. I want friends but I can't go out spending money at cafes, festivals, movies, drinks, etc.