Hi, again. :-) Here is the Prism & Pen page on Medium:
We're looking for many things, but we especially value storytelling like the kind you did with your wonderful parenting piece. You already (clearly) know how to write a draft on Medium. If you write a parenting story for us to share with our readers, you can submit the draft to us instead of publishing it directly. It would go out as usual as a Medium story of your own, but our readers would be much more likely to see it. And we promote on social media, too.
I'll go ahead and add you as a writer on the chance that you might like to. If you don't know how to submit to publications, I'm available to walk you through it at jamesfinnwrites@gmail.com or via DM at the Twitter or Facebook accounts listed in my Medium profile.
— Jim