Ulterior Motive
She is suspicious that Vincent has a secret objective. Perhaps he wished to receive government funds or assistance around the house. That, on the other hand, would never happen. Not as long as Rose was in charge of David. She went to the police station the next day. She reasoned that it was prudent to do so.
Accusations
The cops, however, informed her that she needed to present proof. She was just left with allegations. But that didn’t last long since when she returned, Vincent was waiting for her. She invited him inside. She told him she had gone to the police station today to report his recent behavior.