I haven't experienced this in T yet, although she has had me draw a few times.

Here's another idea of what she might have in mind, this is more from my education (which is so not in psych )
She might be trying to access your right brain which tends towards:

Right Brain Inventory
• Visual, focusing on images, patterns
• Intuitive, led by feelings
• Process ideas simultaneously
• 'Mind photos' used to remember things, writing things down or illustrating them helps you remember
• Make lateral connections from information
• See the whole first, then the details
• Organization ends to be lacking
• Free association
• Like to know why you're doing something or why rules exist (reasons)
• No sense of time
• May have trouble with spelling and finding words to express yourself
• Enjoy touching and feeling actual objects (sensory input)
• Trouble prioritizing, so often late, impulsive
• Unlikely to read instruction manual before trying
• Listen to how something is being said
• Talk with your hands
• Likely to think you're naturally creative, but need to apply yourself to develop your potential

Logically (from my very left brained self, I think working with your right brain would be more "therapy-ish")