The woman sits on a throne, with sword and scales in hand. She represents balance, equality and well...justice. She's often blindfolded (just like the statues and paintings found in courtrooms) showing that her decisions are unbiased and based on logic. Sometimes our emotional states can cloud our judgment, we can find ways to justify wrong doings, we can be harsh on others for making innocent mistakes and it's easy to perpetuate injustice when these elements are left unchecked.
The woman in this card is Virgo, ruler of Libra (an air sign, which is also symbolic of the mind and logic). Something is out of balance, out of alignment. Perhaps you have made a mistake and have been unwilling to correct the mistake out of pride or simply not being aware. It could be that someone has wronged you, and you feel like justice should be served. Either way, it's important to look at the situation with a bit of detachment – as if you and the other's involved were characters in a movie – and determine the best, most fair course of action. Sometimes that means being honest with others when you feel they are being unfair or overly judgmental, and sometimes that means admitting when you are doing the same to those around you.
Was it reversed?