@excitednerves I've just been in the same situation, I have a friend who has been TTC for nearly a year with no luck, I already have a little girl and been TTC our second pretty much since she was a month old.
I fell pregnant in August, October and December of last year, all ended in miscarriages, with my daughter we tried for 6 months, so i know how my friend feels a bit as well as having the losses.
We talked about everything, compared cycles and symptoms, then sent tests we thought had lines etc but shes been struggling, each month sent her down deeper and deeper and my falling pregnant again this month has sent her over the edge.
First she told me she wanted space, so i gave it to her, then she wanted to talk about it, so we did. Only for her to say its too much and now our friendship is over because she cannot watch someone else go through pregnancy when it isnt happening to her.....
I get how she feels, I have friends who are due the same months as I would have been, one friend even just had her little girl.
I hope your friend takes it better and if shes a true friend she will be happy for you! Congratulations!