A Heavy Heart: My Grandmother's Last Days

Assalamu alaikum, brothers and sisters. I'm not sure where to begin. My grandmother has been unwell for years, and last week she was hospitalized and put into a medically induced coma. The doctors say her chances of waking are very slim-cancer and other sicknesses have made it too hard for her to breathe on her own. I come from a Russo-German family, and I'm the only one who reverted to Islam. The rest are either Protestant or don't believe. I've made so much dua, after nearly every salah, begging Allah to guide my grandparents to Islam before they pass. But almost my whole family sees Islam negatively, especially my grandmother, who's been influenced by far-right media from Russia and Germany. I'll be making dua again right after I finish typing this. Honestly, I'm not even sure what I need-maybe just to let out my feelings and share with someone who understands. Any advice, especially from fellow reverts? How do you cope with this kind of pain? It's tearing me apart, especially knowing there's so little time left to make dua for her.