I need to know if my duck will heal. its an emergency?

i got 2 new muscovy ducks today expecting to sell them as a pair at a fair in about 3 weeks. one of the ducks wing is hurt. the left wing is drooping. she is not able to stretch them im afraid one of the bones in her wing is broken and i wanna kow if she is going to heal for the fair and for her sake. i feel bad for the poor girl. i put scotch thape on the drooping feathers to lift it but not to tight to hurt her wing. will she heal, be ok to sell. i dont want one to take the drake and forget her because i dont want them separated