Pat_Mustard
I'm so gorgeous they want to put me under arrest!
You are right about her age, and I think part of the surreal with once such dominant fighters is when they lose their superhuman edge. Valentina is still a great fighter, but she's clearly waning and more vulnerable than we've known, which opens the doors to fights like we're seeing these days that are tight, hard-fought contests, win or lose.
As such a dominant fighter and legend, I doubt anyone else gets title shots unless she says she's out or had enough. The credit she has in the bank to make such calls is un-paralleled in her division so it'll come down to her outlook how, or when, this ends (to the extent she isn't obliterated in a re-match, of course). It wouldn't surprise me to see these two fight a third and fourth time (as @Raoul mentioned) if Valentina's heart is still in it
Personally I hope she moves up to bantamweight. Winning a second belt would be a nice boon for her legacy, and that division could seriously use an injection of interest as it looks utterly moribund, especially if Bueno Silva's suspension is upheld. Shevchenko still looks top-level to me, but I think she's slowed down enough in the striking exchanges that she's no longer invincible at flyweight. Bantamweight might actually be kinder to her in that regard as she should still have the speed to run circles around plodders like Pennington and Pena on the feet.
I don't particularly want flyweight to be held up further either, as there's some interesting title fights to be made for Grasso vs Blanchfield and Fiorot, and potentially Tatiana Suarez if she moves up in weight.