throw her into space

and so I will eat this small block of fancy cheese, for morale. I will take a break and drink some tea, for morale. I will pick up that weird bug, for morale.

But then proceeds to move right in next door with her wife because Albus never said that she couldn’t.

1) Who is she? and more importantly

2) How did this marriage come to pass?

I mean I am all for Minerva McGonagall having had a wife already at this juncture in her life, but consider 

1) Utter BAMF who is acknowledged to be out of everyone’s league Minerva McGonagall walking into a Ministry break room full of lady Aurors and the like and saying, “I have a child that needs looking after and a neighborhood full of prats who need scandalizing and will marry the first woman to say yes” and there is a moment’s shock and then the verbal equivalent of half a dozen bridesmaids diving for the bouquet with one clear winner who was a split second faster on the uptake and they end up in love by the time Harry is old enough to toddle properly.

2) The house next door is being sold by the daughter of its occupant who just inherited it and wants nothing to do with Little Whinging except to inflict herself on all the narrow-minded bastards long enough to get a good price for it; when Minerva walks in the door there is a mental adjustment that leaves her swooning (or maybe that’s Minerva) and after tea, dinner, and certain other activities she invites Minerva to live with her instead of selling it.