going through the motions without investing
I hear the show 6 times a week and never feel she phones it in from an aural perspective. There are most definitely performances, when she is sick, where she has had to hold back in places--modify. It never sounds like it affects the performance.
However, is it possible she's given weaker performances? Of course. But consensus has spoken as has been said (awards, reviews, audience praise). There are plenty of shows and performances I don't agree with the majority on--and possibly from having caught a weaker performance myself. But God knows I don't dwell on it. I don't post in every thread on the subject how disappointed and unimpressed I was.
People DWELL on the negative here.
And, I will say this--EVERY performance nets an enthusiastic crowd at the stage door full of people who thought it was phenominal. You didn't? Fine. Your right to feel that way.