She just looked at it to get a boost of the line. She missed a bunch of rehearsals as she had covid I was told that. But she was brilliant and it didn't distract from the show at all. I have seen many of the performances where many of the performers carried the script.
When Encores started, the performers were lined up and in front of mikes with a script. There were barely costumes and there were no sets As time went by, it became a performance with dancing, costumes and scenery.