Now I want to read her(?), too.
Just a thought that may not work: if you had another account on Medium before, might it be possible to…well, probably not…but I wonder if you could possibly reinstate that account, if only to find this person on your old profile page.
I realize I am making broad assumptions, the 1st being that you had a different account. I am so far from a techie so can only guess that even if you did and tried, maybe Medium doesn’t archive accounts when they are removed. But if they did…well, you’ve likely thought of this, already.
I hope you find this writer. I will check back occasionally and hope I find her, too.
Best of luck!