Re: MUGGLE-BORN HELP
1 - Getting people out of the country ASAP
2- International friends and family? Minerva has family in America who she'd be happy to get in contact with in order to help Muggleborns get out. Use Muggle ways as much as possible. Much harder for Pureblood's to track.
3. Will get her hands on the Hogwarts Student registry to identify Muggleborns/stop the Death Eaters getting their hands on it.