إِنَّا لِلّهِ وَإِنَّـا إِلَيْهِ رَاجِعونَ
I'm so sorry for your loss.
I am sure that she is in a better place, where she will be eternally and rise and Inshallah, receive Jannat-Ul- Firdous. Ameen.
Stay strong, not for yourself, but for the others around you as well. My heart goes out for you and your family .