I saw it. She actually repeated many of the lines three times.
I didn't see it, so anything I say is pure speculation. From the comments here, it doesn't sound like she was being disrespectful, or trying to make some kind of statement. If she was repeating lines several times, is it possible she's showing signs of dementia, and didn't even realize she was repeating the lines? Again, just pure speculation here.
Did she occasionally sing the correct notes?