This is an idea that is very close to my heart as it will be written based on personal experience.
I don’t really know what genre it would be so I’m just going to say YA
Title Idea: Forget Me Not
General Idea: A girl has lost all of her memories a few weeks before the start of her freshman year of high school. How will she deal with the overwhelming flood of people who claim to know her? How will she deal with the stress of starting school without friends and even without a family?