Inter religion marriage

Not sure if this is the right place to ask, but I (25M) need some advice. I’ve been in a relationship with my girlfriend (24F) for 7 years. Her dad passed away when she was 15, so it’s just her and her mum now. She’s Hindu, and I’m Christian. I brought up the idea of marriage with my parents, but it didn’t go well. They’re insisting she converts to Christianity, which I’m not okay with. I tried suggesting we could have both a Hindu and Christian wedding, but they’re still not having it. Is it possible to get married in both religions? I’m honestly not sure how to handle this, but one thing’s for sure – I’m not leaving her. Any advice would be much appreciated.