I think your explanation is right. Easy for a stalker to push a woman or trip her as she gets the front door open.
This guy wasn’t a choir boy:
“He previously spent two years on probation after being convicted of receiving and concealing a stolen motor vehicle in 2019, and four years in prison for a similar offense in 2013, according to the Michigan of Department of Corrections.
Detroit Free Press.
Yes. And if I remember correctly the police questioned him on the Woll murder because he was involved in some way in an earlier series of residential burglaries in that very same neighborhood.