Over time, Luke started to realise how Ria hunted.
She was careful with her targets.
It was never random. Always planned, always after careful consideration.
After all, one wrong move meant that they could easily turn against her. She needed to find someone perfect. A person with a strong sense of empathy, those were her best targets.
Those who cared too much about others were ideal. To her, empathy was a string she could use to wrap around their necks. And when the time came, she'll pull it tight till their eyes lost its shine.
Patience was her best friend. If there were no suitable targets, she'll simply wait. Continue her façade while 'somehow surviving each day.'
Strangely, she never went after him. At this point, they were neighbours. Sharing the same corner and making sure not to bump into each other when the ritual began. He didn't move to help her, and she was the same.