L.H.
OMG! I am a 2nd year art therapy graduate student! Go art therapy!!! It is amazing.
Anyway- I am always glad to hear about someone who breastfeeds into the 2nd year. It's so good for children. I weaned my son a few months after he turned 2. We also do the family bed thing still (he'll be 3 in july), so I understand the nursing to bed thing. My milk production began to slow down just because he was getting older and nursing less throughout the day, which made it a bit easier. But what I began telling him (and still sometimes need tell him when he sees me without a shirt) is "Alex got to have all of Mommy's milk! You drank it all up! Good job!" I just say it really cheerfully like he should be proud of it. That way it isn't really mom taking milk away or withholding, it shows them that they are growing and maturing and got what they needed and should feel good about themselves for "finishing the job". My son always looks so content with himself after we talk about it that way. Just make sure you do this gradually continue to give lots of physical contact and kisses and hugs and stories before bed to make the transition easier.
Also, from one psychotherapy mom to another, I highly recommend the book "Our Babies, Ourselves". It puts an evolutionary psychology spin on being a mother and being a child. Not only has it helped me be a better and more understanding mother, it has been very instrumental in me understanding my clients (and humans in general!)A quick read that you won't be able to put down. Believe me- you'll start handing this book out to every mom you know!
Good luck, be gentle and patient with her, and then enjoy having your boobs back! ;-)