After Deloris gets captured, her sisters at Saint Katherine’s take it upon themselves to come to the rescue rather than count on the police to get there in time. And it’s a good thing they do. Their intervention buys Deloris the precious few extra minutes she needs until Eddie and the rest of the police show up. However, before Eddie arrives to save the day, Deloris decides to give herself up to Vince, as long as he agrees to spare her friends.
Except … why does Deloris seem to think that Vince wouldn’t hurt the nuns after he shoots her? After all, the whole reason Deloris is in trouble in the first place is because she saw him kill someone. It goes to figure that if they all witness him shoot her, they’d all be liabilities, too. And while Vince’s henchmen seem to have a moral hang-up about shooting nuns, Vince himself has no such qualms. Practically speaking, it seems like Vince would make things a whole lot harder on himself, legally speaking, to shoot a convent full of nuns, but considering he already doesn’t seem to see a problem with murdering Deloris in front of a bunch of nuns, he’s probably not too concerned about that.
Fortunately, the police arrive before the bloodbath can start, but if not for Eddie’s well-timed shot, the end of Sister Act could’ve wound up looking less like a family-friendly Disney film and more like the ending of The Departed.