I don’t care about her age. I care that she does not respect the Constitution, that she is solidly pro-anything-leftist and that she hates Trump and the Republicans.
So what? There’s no requirement for a Supreme Court Judge to meet your idea of respecting the Constitution, nor to be of any particular political persuasion.
And that’s a good thing, whether she’s considered on the right or the Left. That’s also why there are multiple Judges on the Court.