Hi Emily,
I'm so sorry to hear about your Mom. I had the same very close relationship with my Mom so I can really feel your pain. For me the first year was the hardest. The first Thanksgiving, Christmas, Mother's Day, etc. without Mom. But it does get easier, it just takes time. That's part of the grieving process.
I believe your Mom will always watch over you. She is your guardian Angel now. A love that strong will never die. There are times when I can feel my Mom, I know she's with me. I bet that will happen in time with you too. I also got some grief counseling which helped me cope with her death. You might want to consider that option down the road.
Love and Hugs,
Shelley