Hey DoB,
Glad it worked out for you. Sorry I wasn't able to come back and update more, my phone started to get really low on battery.
My fiancee was on 443 sitting there for almost 3 hours while the police did their thing.
Eventually they used an inbound Acela as a rescue train as apparently the impact of the person did actual damage to the MARC train.
Wow, she was on the incident train itself. That must have been - interesting? Not sure what the right word is.
Anyway, I'm now on 449 from BOS to SPG, connecting there to 475 and hence to 175 back to NYP. (And then I go home and collapse.) So far, everything's been running perfectly on time today, but there's still plenty of opportunity for another adventure.