Gone by Ghosts (Natasha Romanoff x OC)

"Bye, bye, bikinis" most of us probably remember Natasha Romanoff saying that. But do you remember what mission she was talking about?
Something about Odessa, some tires, a cliff, and the winter soldier. Unfortunately for us, we never got to know how she ended up in that situation. Maybe, just maybe, it would end a little differently in a parallel universe when you add another agent to the equation.
Kate is freshly promoted to a level 5 agent. Hoping she can impress Fury further, she's excited when she gets called in for a new mission. But when she meets her chosen partner, memories of her past come back to haunt her.
What memories has Kate buried for too long? Will she learn to trust the Black Widow or will she find more reasons not to? What if they start building a connection beyond the professional? Will they be able to pull through and complete the mission?
And will it end any different from its original outcome?

Trigger Warning: This book contains violence, sickness, torture, and death. It also includes swear words.

Since this is my first book I appreciate helpful tips and constructive criticism, so please let me know.
I don't own any rights to the Marvel character appearing or mentioned in this book! I do own the rights to the storyline, the main character Kate Davis, the mother, the villain, the families, and other side characters that I come up with.
Enjoy:)
I made a playlist, too. It's called "Haunted" and has the book's cover.