Why doesn't D.C. Mayor Muriel Bowser just tell the President and his administration to get out?

I was surprised last Friday to learn that Washington D.C. mayor Muriel Bowser ordered hotels to evict National Guards members who had come to get the rioting and looting under control, and has (or in the act of) changing the address of the White House from Pennsylvania Avenue to Black Lives Matter Plaza.

If she has the authority to order the military out of Washington D.C. then why not the White House?

If she does NOT have such authority, who will stop her?