Yeah I prefer her to be the age she was meant to be, the same age as Barry, or Lois Lane, or Carol Ferris or any other of her contemporaries. Aging her to look that old was a retcon anyway for that series, no need to cling to that. Bart is still from the future
that hasn't changed and is what matters, no reason for her to have been retconned that old, whith her proximity to the speed force time has fluctuated for her, Wally's kids were older once then quickly deaged, Bart was older too then, and now simply deaged to his more appropriate and popular age, this is nothing new, she's fine the way she is now, and looks great.
And for the movie they will no doubt cast her appropriately, about the same age and a contemporary of Barry's, as it should be.
And cute too.