How can I get my sister to get over me being gay?

Here’s the deal. My younger sister has been “saved” recently. I was also at about her age. After I came out, I prayed more and harder than I ever had. God gave me the answer, it’s ok. As long as I am a good person.

I moved away with my serious girlfriend in August, and now she will not leave me alone! Saying that I am going to hell and I do not really have God in my heart. Basically just judging me thinking I will cave, not be myself, and unhappy for the rest of my life.

I feel like I have told her everything, but she wont stop. Any ideas on what to do?