You can assume she shows up and half-heartedly offers what few heart cuts remain in her possession unearthed, and she agrees to help with the ladies' cleansing ritual at a later time.

To make it fair to everyone also planning to intervene, she can step in later in the night's progress. That way, #groupeffort.

As she's bringing (at least a) heart cut, one of Wrathion & Caitlyn can have the piece — whichever one of them doesn't have a heart cut already by the end of the log. If neither has a heart cut through other threads, you can assume Miang-Si surrenders them a cut each. They can either keep the pieces or toss or destroy them, up to you!