Shadowrun Success
Witnesses told police she had been following the man closely and mumbling to herself. She got up from a nearby bench and shoved him as the train pulled into the platform
1. Good disguise as crazy street person: Check
2. Follow suspect mumbling so as to cause him to ignore you: Check
3. Time ambush as train approaches; roll for surprise: Success
4. Melee attack for knockdown: Success
5. Slip away and collect payment: Check
Looks like a successful Shadowrun to me…