Welcome! You are more than welcome to post here! You can provide us with the other side of the coin as well.
Honestly, I'd take things slow and just keep working at it. If she wants to have contact hopefully he can breach that gap. If not, offer up a phone number where you can be reached and have them give it to her/them. It is up to them to take further steps too and sometimes they just aren't ready.
I don't think there is anything you can do to smooth things over. It is a hard clumsy challenging situation for all involved! Just make sure you think of it openly. NO expectations, no demands and let things evolve as they will. It all can be so painful for all involved that in my experience the best way to approach it is with an open heart and willingness to wait forever. I always thought of it like no one can have too much love. I LOVE my birth daughter's mom, I LOVE my birthdaughter, I love their extended family. We are a forever and ever evolving shape of love...no one HAS to be left out. If they choose to sit it out for awhile, that is fine!
PM me if you want to talk more!