Translation of what Nana-san said:
Nana: Since very young, I have always loved to sing. My parents had set up a small school (classroom) for people to learn how to sing, and actually, at that time, I sang enka. Kohaku had always been a show where my family would gather and watch together every year. To me, Kohaku is my dream stage and ultimate goal. To be able to stand there, I feel very happy. I will give it my all and give a powerful performance.
Again, congratulations to Nana-san!
I still laugh whenever she says the phrase 全力全開 (zenryoku zenkai)! It’s not a Nanoha-series specific phrase (even though that is usually what MSLN fans immediately think of), but I have to wonder… Did she use that phrase as often BEFORE coming into contact with the Lyrical Nanoha series or was she influenced by Nanoha? XDD
Need to run to do a bit of work, but will be back to dig up more info later!