Depends on what the novella is about. Second person is best utilized when you want to throw the reader directly into the action. For example, I wrote this tiny excerpt last week, I think:
You comply, trying your best to adjust yourself until the lieutenant gives you the go ahead to shoot the arrow. She stands there, her full attention on you, as you pull your fingers back, feeling the strings go taut. Your eyes stay focused on the tree, willing the arrow to hit its target.
And then, in one swift motion, you let go, watching as the arrow flies free. The bow almost slips out of your hand, but this time, you tighten your grip. Your mouth hangs open as you watch the arrow soaring towards its target. Any second now. Any second now, it should hit.
CYOA’s are super fun! I actually wrote one a long while back about a dating simulator.
It starred some characters from my writing.