Fighting my SIL

I'm so close to wanting to fight my SIL. She ALWAYS has some snarky ass comments, I made lasagna today and comes in and said "ugh wasn't that smell?" I thought she said it as a compliment but I turn around and she has a disgusting face. I have an accent so when I talk so some words dont sound right. I thought i was saying the word "poem" right but apparently not, as she continued to make fun of me. I was so mad, my husband didn't even bother to say anything to her until I gave him a look and said "that's her word." I was over it, I'm just waiting for may to come so she can move back with her parents. I cant deal with her and my husband not having my back.