Why would her coach recommend a partner with absolutely no dancing experience or demonstrated skill?? That doesn't compute in my dramatic calculus.? Is he deliberately trying to sabotage her?? Is he the villain, a wolf in sheep's clothing?
Who is the villain, anyway?? Who is her chief rival?? The plot needs one.
And what's at stake?? What's at risk?? ?Why MUST she win?? Consider the wonderful Australian movie "Strictly Ballroom" (1992).? The stakes are that the talented protagonist wants to dance his own moves rather than submit to the? rules of the dancing federation.??But if he does, he risks destroying his career.
The overarching principle? at stake is freedom of expression versus cowardly conformity to the rigid, arbitrary rules of the establishment.? ?That's? a principle an audience can root for.?
What overarching principle is there in this premise for an audience to root for?? Why should an audience want her to win?
It seems to me it would be a more interesting story if the street fighter steps up unbidden, volunteers to be her partner.? And after a period of debate and indecision,? the girl accept his offer in spite of her coach's opposition? -- not because of his recommendation.? That inherently intensifies the dramatic conflict.
fwiw