My friend has Jealousy issues!?

Ok, so I hated my choir solo for my solo and ensemble well and my choir teacher figured that out so now he gave me the solo amazing grace to do. I was totally stoked because I am usually an alto and it was a sorprano and I can sing it! But my friend lets call her Hannah is also doing amazing grace. So now she is mad at me for stealing her solo. I think she is jealous cuz I can go high and she is the one that is supposed to be able to go that high! So what should I do!