There isn't a question about moodiness in the Tanner Stage Calculator
. When you're going through puberty you get more emotional (you cry easier, anger way easier, get happy easily, etc.).
That is true, but the problem is that mood swings don't pinpoint what stage of development a girl is in. All it tells a person is that puberty has occurred. It would be nice to say, "irrational anger" tends to happen in stage 3 and "overboard giggles" happen in stage 4, but unfortunately those can't be narrowed down to stages.