I am truly sorry to read of you loss. I know how I felt when my father passed. For a while everytime I thought of him the ache felt like something I thought I couldn't get through. But after a while, when I thought of him, it changed to a feeling of thankfulness for everything we had shared.
I am so sorry for your loss. You and your family are in our thoughts and prayers during this difficult time. Cherish her memories and remember the good times.