The $WILDFLY_HOME/bin/service.bat script is implementing service stop by launching a CLI process to send a shutdown op to the server process. This differs from how we handle service stop on *nix, where we use kill -15 to sent a SIGTERM to the JVM and stop via our shutdown hook. Investigate whether Windows taskkill can be used instead.

https://superuser.com/questions/959364/on-windows-how-can-i-gracefully-ask-a-running-program-to-terminate