And they had some experts watch the video to analyze whether, from the angles, mechanics, and points of force, it was Mabel Quinn deliberately pushing away Grace Yowell's hand, or Grace intentionally knocking into the coffee cup. According to various simulation experiments by those experts, it can be proven that from that angle, wanting to hit the coffee cup with the movement range of Mabel Quinn's arm shown in the video, it was impossible to exert such force; it should have been Grace herself who exerted force to knock into it.
At the same time, Kyle Kinston also retrieved surveillance footage from near the mall that day. From these videos, it can be seen that someone was actually following Mabel Quinn and Alice Conley, and not long after they entered the mall, Grace Yowell appeared in the mall. After Mabel Quinn and Alice Conley had entered the coffee shop, Grace received a phone call, and she too headed to the coffee shop.
