Brayley
From Tardis Wiki, the free Doctor Who reference
Brayley was a human biology teacher. She found and took care of a tiny and cute Drokkvid, which after eating a sandwich left in the draw began to eat up everything. When the creature gre to giant proposions she assisted the Eleventh Doctor and Clara by showing them the compost heap which was instrumental to defeat the Drokkvid, reverting it back to a more manageble size. (COMIC: Teacher's Pet)