I'm presuming that Bradley refers to BDL. If wrong, disregard.
All you get is a refund of your ticket. No penalties apply. Your travel insurance may pick up some or all of your Amtrak ticket and other incidentals.
The northeast between RIC and BOS was a mess so hardly surprising that B6 cancelled. As a general proposition, always affirmatively check for delays & cancellations, especially when there are known travel problems. I have no idea when B6 cancelled, but it would obviously have been nicer for you to head for an earlier train.