Is that what happened? I know the one baby yu in the last page looked distressed, but that could just as easily have been her picking up on her mother's stress and tone, and whoever Reimu was puffing at could've ripped the stalk off.
Why? Because you are a yukkuri. Your happiness if for me to take. You exist solely to enjoy one moment of joy, then to wallow in misery for the rest of your life. This is your fate. For I am Abuser.