that boiled over into the alleged vandalism.

so the complainant goes to the police claiming that they're husband's babymama keyed they car b/c she mad about some bullshit. the police go look for the babymama to find out if she'll talk. if the car was parked in an area that's covered by surveillance cameras they'll try to get video footage. they'll knock on doors of nearby residents asking if they saw anything. they'll take photos of the alleged damage and any thing else in the immediate area that might provide clues. among other tactics.