Continuity mistake: When she is in the boat she takes off her blindfold entirely, but after some talking the blindfold is around her neck all of a sudden.
Audio problem: Malory ejects all of the shells in the shotgun to show she knows how to operate it, but the audio clip is of empty shotgun shells hitting the floor.
Other mistake: For the most part we see Malorie floating in the boat going with the river. However, numerous times we see her rowing against the tide. Even blindfolded you would be able to tell you are rowing against the flow by the resistance on the paddles.
Revealing mistake: While they're finally on the rapids, the girl blindfold keeps changing position from her neck to her forehead. (01:40:59)
Continuity mistake: Malorie pulls out her Sig Sauer P229 handgun and begins firing but the insane guy disarms her and the handgun falls. Malorie is on a boat and the crazy guy is standing in deep water. It isn't shown where the handgun lands when it falls out of the insane guy's hand. Later on Malorie pulls another Sig Sauer handgun from the same holster, however this time it's a model P228 or possibly P226, the 226 has a 0.5 inch longer barrel. The 229 and 228 have completely different slides. The 229 is a legacy. (00:36:50 - 01:01:30)
Answer: After what happened to Charlie, they were discouraged from staying or returning to the store.
Rassdyt