I think the design of a ship would do everything it could to save fuel requirements, and find it worthwhile to have different systems to use for *breaking*. It might deploy a solar sail, a magnetic sail, or various things to cause drag.

Even if it planned to use the main drive for some deceleration stage before using these other means, it might use the break *anyway* with some useful effect. It might continue breaking, gradually, even well past the sun and on into true interstellar space.

So, a follow-up or rescue mission is *possible*, with the next mission changed to rendezvous.