Saying anything Have the client just say things without limiting the scope in any way. Often people are uncomfortable being vulnerable and just blurting out whatever is on their mind. This is an exercise to get over that. So, have her keep saying things without any prior hints and preferably without making a system out of it as a way of avoiding it. Demand instant answers with no thinking.
Meaningful communications Ask the client for meaningful and meaningless communications.
Don't set up any precise definition or guideline for what that would be. The idea is to make her realize that anything is meaningful or meaningless depending on what she says it is. Don't tell her that at first, though. Let her struggle trying to come up with good answers until she realizes that it is all up to her. Something more Get rapid answers to a series of questions asking the client to give different kinds of statements.