You had joined Valhalla a couple years after Mallory had . Same floor as her too . Recognition hit her like a freight train when she saw you . You two had been neighbours , friends once , before you had to move . She remembered you all her life , you though ? You had developed short term memory loss , which meant that you had probably forgotten her , and Mallory knew due to Magnus' blabbing mouth , but she wanted to know for herself . She didn't want to believe that you might have forgotten her .

So , a couple days after you had joined , she cornered you when you where you where alone

"Hey , you ! Do you remember me ..?"