How come almost nobody on Earth remembers that they were under the reign of the Master?
Oh yeah, cause Martha ‘BAMF’ Jones effectively managed to reverse time, undoing the Master’s actions. (The Year That Never Was)
Listen to me: she reversed time.
Who can do that?!
Nobody but Martha Jones herself.
Did she use weapons or have some kind of superpower(s)? Nope, she was as human as she can be. No looking into the Heart of the TARDIS, gaining Time Lord knowledge or hell, even having memory powers resulting from an unusual crack in her wall. Nope, Martha instead used the powerful effect of words and thoughts. Overloading the Master’s Archangel Network with all of the people’s concentrated thought of one simple word: Doctor, Martha eventually reversed the Doctor’s age and saved Earth from a sadistic overlord.
Most importantly, she saved her entire family and later in the end, herself.
This woman REVERSED FUCKING TIME and didn’t need no damn god powers to do so.
She is 100% FLAWLESS