They learn later that the potion Durao drank at the beginning was actually a different one. ML's mother had someone switch the potion so instead of gaining past memories, Durao's memories got messed up and all her good memories with ML were removed.
Ok... So even more misunderstandings
Omilord now the misunderstandings are piling like......am I even shock ╮(￣▽￣)╭
That woman I swear to the lord
Now hit me with your best spoiler coz Im about to lose my mind from this misunderstanding （￣へ￣）