What the hell happened to Dana in the two final services in season 10?

In the final four she made like 4 mistakes in a row and was really slowing down the kitchen and in the final 2 and she was the main reason alongside Robin the red team stalled out in the service.

And in both instances her screw ups ended up screwing over Christina. Like yes Christina wasn't perfect like its genuinely impressive how many times she lost a challenge but wow Dana really wasn't doing her any favours.