<human>: Can you condense the text into a few key points?

This is seriously probably some high school drama, but here goes: I've been dating my SO for about 5 years now. He has several friends who he's introduced me to and we've become friends, too. They grew up near a military base, so they all moved away from each other but do keep in frequent touch, visit each other, etc. We're all in our 30s.

A few months ago one of my SO's close friends deleted and made a new Facebook but did not add him (she added me) because he was friends with a girl that "ruined her life" several years back (without going into too many details) and she didn't want any association with that girl, or anyone to "update her" on her life. He texted her asking why, they got into an "argument" but she ended up adding him back on Facebook. He was still upset, said she did it just to shut him up, etc.

She later deleted her Facebook altogether for security reasons, but still has an instagram. My SO "unfollowed" her on IG, she noticed and texted me, I ended up calling her and explaining that he is hurt, heard her side of the story, etc.

Fast forward a few months later, they still haven't talked. I talk to her quite often as we get along very well. She has visited us several times in the past while passing through our city, etc. She and her daughters are amazing and she is about 8 months pregnant with a baby boy and I know both of them want to still be friends but neither wants to make the first move.

So, my question... can I interfere, send her a message asking "hey, apparently he texted you a few weeks ago but didn't hear back so he thinks you're still mad at him, did your number change?", something innocent? Or just let it be? It makes me sad to see them like this.
<bot>: My SO and one of his close friends aren't talking, is it a wise idea for me to interfere by pretending like my SO sent his friend a message to get her to contact him?