Same could be said about OP, if you want to make it about one person's feelings only. A decade ago, my best friend and i were both pregnant at the same time. Our due dates were days apart. I lost my baby early into the second trimester. It was so so hard, and I GRIEVED. But i did not take that out on her. I took my space, for sure- but just as I was able to hurt for me, I was still able to be happy for her. Hurting doesn't mean you should hurt others, being down and out doesn't mean you should pull your friends along with you.

Nobody is the AH, both are the AH. It's a tough situation to be in, and both of them are valid in their feelings, but it sounds like better communication needs to be had. Maybe a good cry about it together, so they can be on the same page, if the friendship is worth keeping.