The past that I forgot-Avalance

Ava Sharpe is traveling through time with her awesome girlfriend; Sara Lance but all changes when a teenager appears claiming to be someone from Ava's past one past that she doesn't remember.
Brooke Sharpe was seven years old when all happened when she lost the person she loves the most in the world. After six years in living hell, she haves a chance to be with Ava again.
Sara Lance is surprised by all that is happening but she will obviously help her girlfriend and together they will create a new life with Brooke.
But when something was that easy in their life?

or the one where Avalance raise their teenage daughter

I do not own legends of tomorrow, Ava Sharpe or Sara lance I only own Brooke and the plot