Strange mother in law

My husband left to the navy over a month ago. His mom never really has talk to me and I knew she didn’t like me but I finally confronted her and she’s like well I didn’t know you but we’ve been together for 2 years and got married last September. Well anyways she’s not close with my husband, she’d barely say hi to him at home and now that he’s gone she wants to act like mother of the year. When she’d call him names and be negative with him. She constantly messages me if I’ve heard from him when I haven’t and she’s like I think about it all day that’s all I do like okay when at home you never paid attention to him. She’s the type to be all good in with him and ask for money. Her and the stepdad are that type, I don’t live there anymore and he asked me for gas money. It’s weird how all of a sudden she wants to be close with me after my husband leaves when she had all this time to invite me places and what not. I feel she’s trying to get in good with me so she can ask for money. She asked if my husband is getting paid and how if he doesn’t have a bank account. I hate personal questions like that like it’s nobody’s business asking about money. I just feel when I finally reunite with my husband and live with him, she’s gonna ask us for money. I’m going to be so mad because she has taken advantage of our money and my husband is too blind to see that. It’s lowkey giving me anxiety already cause it’s just weird how she’s just a changed woman now. And I know she’ll ask for money.