I think it makes sense if she spent that much time in a quantum state, that it'd change her on a molecular level. That she got entangled with Scott must have been...uncomf. I mean, that's literally sharing everything that comprises one person with someone else's molecular space. And imprinting enough to leave a message really has turned my brain into a yoga pretzel.
So if Strange has been there and Scott's been there? There's no reason we can't get in. Build something, open a tunnel, and start running experiments. What I need to know is how big of a space do you need and how much power can I supply you with to run it? With you knowing the tunnel and with Lang wiring up everything, should be golden to get it rigged up quick. Because if we can move through time without going bull in a china shop, then we might be able to tweak some things in our favor.
Since this is filtered to professional nerds, I can't say "In before Strange tells us not to mess with time travel" like I want to. I'd be surprised if we can get Strange to hop on board with this without giving us the "Don't mess with time" lecture.