After being in both positions in this situation...
Talk with her. Talk with her boyfriend too.
Why?
You all are VERY close to this situaion, you're all scared. You ALL need support from each other and TO support each other.
Bottled emotions cause mental stress, mentality changes and those can really cause physical harm. Stress can also make you VERY sick. It raises blood pressure which can lead to stroke, heart problems or worse.
Crying is part of life.
Pain, laughter, happiness, sadness, scary situations, shock etc. Crying releases stress along with some kind of bodily chemical that can help you bond.
"Men don't cry" is BS
"Big girls don't cry" is BS.
Weddings, funerals, births, big events that are you are IMMENSLY grateful for (That you're friend is alright)...Crying happens, it is NOT weakness.
She needs you and her bf
Her bf is there for her but needs some support,
you need her, her bf is someone also in your situation so it would be good to bond with him.
I hope this makes sense and helps for you and others in this kind of tough situation.
~Hugs are offered~