EMOTIONAL HELP. Sister lost hers and I'm still pregnant.

I need some emotional uplift today. My best friend, cousin, more like sister found out she was pregnant just about a week and half after I did. Our due dates were 2 weeks apart and we were so excited to be going through this together. It was such a blessing and we've been talking everyday about babies and goals and futures. Yesterday, after work she calls me and tells me she can't walk. So I rush to her and rush her to the ER. They did an ultrasound and we saw no sac, so I knew something was wrong but I kept a smile for her and kept it in. They then took her for a transvaginal US and there they realised it was ectopic and took her to surgery. I feel like my world is crashing down with hers and I have not stopped crying at the thought of her having to see me do this alone now. I know it's inevitable for her to prob feel frustrated and today after the surgery we spoke and she said it's going to be so hard for her during my pregnancy. I'm still only 7 weeks along so I am so early and I feel so devastated. Has anyone ever had to go through the loss of a sisters baby while still carrying?? The hole in my heart is huge today, I can't help but feel guilty. I have PCOS, it's my second baby and she's been through so many years of trying before and now that she finally got it, it failed. It feels so unreal.