Talking is coping mechanism that allows a person to rationalize and validate their own fears, concerns ,worries, dreams and hopes. If we are not allowed to vent , we end up bottling up our emotions which is detrimental to the human psyche and can end up suffering from it's side effects. Such as Ulcers, depression , high blood pressure, anxiety migraines, fatigue..the list goes on and on. So when you find yourself in the position of being the receiver of someones griping moaning bitching realize that not always is advice warranted but more or less you have become the outlet for someones Physical and Psychological health.
She was purely venting, so don't take what she said personal