Nineteen-year-old Riley has it all figured out: lead singer of her band, dating the perfect girl, and one of the brains behind a new
memory erasurememory-erasing device. ThenBut when she getsis sexually assaulted by a closeher uncle, the resultingtrauma causes her to tank her relationship (does it just affect her relationship?) and get arrested (why is she arrested? if this relates to her relationship or something else, say so). Seeking a fresh start after her release, she leaves (drops out, perhaps) college and takes up a tutoring position at a music class. There, she is assigned to eighteen-year-old Luke, a music savant plagued with composer’s block.
As Riley aids Luke in reigniting his creative spark, the two form a relationship (romantic, friendship? You mention she dated the perfect girl so I'm assuming she's either gay or bi.) But after Riley discovers Luke is responsible for the tragedy that inspired her to create her device, (did she create the device first, then afterward get assaulted? Or was she assaulted then decided to create the device? How is Luke responsible?) she is faced with a choice. Either soldier on with the scars from being hurt again by someone close to her, or use her invention to wipe her mind clean of all painful memories (is it just the painful memories the device erases or every memory?). Doing so could mean Riley losing her identity.
THE SUM OF WHO WE ARE is a 63,000-word young adult novel, with light science fiction elements, told in Riley and Luke’s alternating perspectives. It will appeal to fans of Adam Silvera’s MORE HAPPY THAN NOT.
This is what I got from your query. A girl is sexually abused. Creates a device. Meets a boy. Is hurt again. Wants to use the device.
If this is not correct, then I would suggest going back and tweaking some lines to clarify your plot. I get that if she uses the device, she'll have no memory of anything. But maybe find a way to beef up the stakes in your query. Also, no idea how she goes about creating this device. I'm assuming she's smart? More than anything, I'm confused about the timeline. If she is first assaulted, then comes up with the device, she has motive. But she apparently doesn't even use it. If it's the other way around, why did she even help create it? She's in college. Is her major related to the device? Was it a project? I realize not everything has to be said in the query, but as is, your letter was confusing to follow. It sounds like a great concept though. Good luck!