Ever since Doomsday Clock and seeing Jay and Alan’s families, it pretty much not showed Joan and Molly at all.
And looking at how Jay was alone in the latest Flash storyline that showed all of Flash’s extended fAmily and talk of Jay’s loneliness, it seems Joan has died. And then ever since Alan’s coming out of the closet, there’s been nothing showing Molly.
So I’m going to assume both those ladies are deceased.
I guess it’s no coincidence that Geoff John’s has introduced two new kids right now as a legacy for them. Judy Garrick and Harlequin’s Son.