Sage Potter follows Sirius through the Veil. When she wakes up, she learns from Sirius that they both ended up in a parallel world, a parallel Earth. Sage thinks she can finally have the normal life she has always wanted, and a family with Sirius. But she could never be normal. And this world is not devoid of its magic and wonders. FemHarry. Sage/MM(Daredevil). Minor Sage/Strange.
The incident during 2nd year has more repercussions than Hanna Potter thought. Now that the horcrux inside her has been destroyed, her magic has started manifesting itself in a different way than before. Unfortunately that means that she can't stay in the WW anymore. One of the Potter possessions is a flat complex in Hell's Kitchen, NYC. Sounds like a perfect place to start anew.