“They were coming.” would be a much better final line.

She knew the damage to her and her neighbors’ yards was due to the concentric focus of the boys’ activities. If milkshake production could be distributed across many yards, the boys would do less damage. She could teach others to make the milkshakes, but given the resources required, she would have to charge or else risk bankruptcy. She pondered her options regarding the future while sipping her lavender matcha milkshake and watching the boys through her window as they ran rampant in her yard.

Don’t worry.

My milkshake is better than hers.

The boys are back