Family issues

[Ryanburns]

Ok maybe you guys can give me some advice. I'm 18 dating a soon to be 17 year old. We've been dating for almost a year and for the most part we haven't really had any problems. My mom and her sister met her in May and now they are trying to get me to leave her saying that she's just with me because my mom makes a decent income unlike my girlfriends family. They are saying that she's a gold digger. However talking with her she seems to truly love me. I love her. But at the same time I don't want to disappoint my family. We are supposed to be getting married next August and I want my family there but I'm not willing to have them there if they do not accept her. How do I nicely put my foot down. With my family and tell them I'm not leaving her? It's caused a lot of issues between my family and I and it has brought on a lot more depression for me. Any advice would be helpful.