As adverse to confrontation as Mitsuki is, I have to imagine she'll spiral and turn tail, before she'd actually go up and face Aya.
That said, there's more than a couple people around them that would help set the record straight, up to and including Shu herself who is definitely not a fan of Aya the way Rink is of Mitsuki. And, if Mitsuki was paying half as much attention to Aya as Aya was to her, then she'll know just how plastered Aya currently is.
Though the fact that each time we saw her this chapter up until the end, she was pointedly not facing Aya's direction, coupled with Aya's plea....well, Mitsuki is taking "avoidant" to the pro leagues.
Can't wait to see what next chapter brings though haha - should be all sorts of fun.
Thanks for the TL as always.