As a mystery, not going really well as it is still unknown why two persons were killed.
On the characters building side, it is so good.
Viggie is the daughter of Monk was her father and he was dead.
The scene is about Michelle having previously told Viggie she has problem cleaning out her car, and Viggie had done it for her. Michelle got upset that Viggie mess with her stuff. This set the scene that Michelle apologized to Viggie and Viggie understood her that they both have experienced this out of control moments.
It is hard to sort out emotional stuff sometimes. Lot of people are pretending they are under control. And this is a good moments to strengthen the characters to make it more real.