Mariah Carey explains why she was a bit ropey

Mariah Carey has felt the need to apologise for her performance at the Michael Jackson On Ice Memorial Show:

"Trying to sing today was basically impossible for me," writes Carey. "I could barely keep myself from crying. I'm sorry that I wasn't able to pull it together and really do it right, but I was literally choked up when I saw him there in front of me."

Well, that's Tuesday explained. Has she been crying solidly for the two decades prior to that?