Help needed M34 dating F23

M34 dating F23 for almost year and a half. We have been talking about marriage and I do love her and she feels the same. We live together However, she is currently on a work visa and she doesn’t make much money, I make significantly more than her. But I do pay for mostly everything, I ask her to pay 1 ~$200 bill per month. Recently a family member was very derogatory towards me and my relationship. Telling me to get rid of her, what am I doing with her etc. I am conflicted for financial reasons, she has a good amount of debt and does not have a great earning potential right now. Her visa is also expiring. So for her to get a decent paying job it would be after marriage. I’m torn at this point. Financially my family member has a point. I do take care of her. She says she doesn’t want me to support her but since living together I mostly have done so. My heart wants to stay with her. The financial pressure is building though and I am also starting to accumulate debt. I am just looking for some advice from people here?