1) Come on, hurry up and choose. Which one to crush? It's not that!! That anko was" thrown" up by Reimuuuuuu"!! *zuri zuri* [slide or shuffle]
2) Hmmm, and which one do you want me to crush? It doesn't matter" what happens to Reimu", so please" spare" the little ones!!! Please" I beg" you"!!! R: Mommie* take it easyyyyy*!!! L: Don't* bully mommieeee*!!!
3) Which one do you choose? The one on the right? Stop" ittttt"!!! This" is" a" very" yukkuri"*, kind" child" desuuuuu"!!! Mommmmie*!!
4) Then it's the one on the left This" child" is" also" Reimu's" precious" child" desuuuuuu"!!! Please" I" beg" you" not" to" crush" herrrrrr"!!! Yu"waaaan!!
The obvious answer here is to crush the mother, then allow the babies to grieve for a few minutes before crushing them as well. The mother is their only hope.
Probably simply randomly picking one child and very slowly crushing the life out of it would be the best choice. The mothereimu will probably die out of pure grief.