And Kang or whoever is running this version that will try and prune this timeline, is going to be very unhappy when Taylor makes her displeasure known. Thereby resolving the whole Loki Series in a few steps.
She can also fix the whole Secret Invasion thing before it becomes a Popcorn fart, by fixing up a planet for the Skrulls to settle on, and side stepping the anger of Nick failing to live up to his promise.
She could also-
Help the Winter Soldier get free and get help. Maybe even absolution from the families of those who he killed while acting as a human drone.
Defuse Tony by bringing to light just how much shit his father got up to: Like while he had an eye for talent, he didn't care how depraved the person actually was, but just what they could bring to advance both the science and peace under SHIELD.
That he literally pardoned and employed war criminals that experimented on Allied Soldiers, that were completely unapologetic, but were smart enough to recognize how enamored he was of their genius... So played the right tune to get themselves employed, protected from getting in trouble, and free reign to do whatever they wanted as long as they claimed it was for the benefit of mankind.
Brainwashing, mind erasing, and so many other things that they turned around and used on Bucky Barnes and others. Then there was the debacle of betraying his "science bro" Hank Pym after his wife died, namely trying to reproduce the Pym Particles to create tiny hidden assassins to kill enemies of liberty and the greater good...
Oof, imagine showing that to Tony, and how infested SHIELD was with Hydra thanks to his dad. Even appointing the man who had him killed as the new head of SHIELD, was best friends and partners with Stane who tried to have his son killed, and of course was science bros with the Red Skulls pet scientist...
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But yeah this new arc has a ton of potential for things she can help out with, defuse, and but out fires before they become hellish infernos...