at least once when she rolled with disadvantage:
die #1: 20.
die #2: 1.

even worse for her luck? As a fighter, she's got improved critical, so she should get critical hits on 19 and 20.

In the campaign that character is in, we're not DM, so it is not our decision.

We do hope the DM lets her get transformed at least mostly back to human, though.