You know no one had ever taken into consideration that Valka is kind of a bad mother.
Here's a little "Reason You Suck" speech to her.
Dear Valka.
Leaving Stoick I could understand but in the process you were abandoning your son just so you could live with the dragons that you felt closer more to, leaving Stoick having to leave him to fend for Hiccup which we all knew how that turned out for poor Hiccup growing up to become the outcast of Berk and always being in his father's shadow. Where were you Valka when your son needed you? Where were you!? As a mother, it's your responsibility to give your child his/her upbringing but apparently, it seemed dragons meant more to you then your own son, your own flesh and blood. The least you could have at least also done was once in a while going to Berk secretly to watch how your boy is doing but apparently, you have never done any of that it seems...
Simply put, regardless of how you felt for the dragons, in the process you were leaving your own child who by the events of near the end of the first film had an overshadowed life when he could of had someone there to support or guide him.
Mother of the Year y'all!
And now I must hide as I hear
Noipoi
rabidly approaching.