Lily having wanted to bring Wei Wuxian into this: to what degree would he be able to bard influence the mermaids?

In this case, he'd be wanting to wrangle a few out of the mist to be very feral looking nuisances to drive the boats back, likewise using them as the forward guard to try and keep the other undead mermaids from having a festive meal right there off the coast. Would this be feasible?