To print or not to print that is the question

So I had a talk with my mother who is a very fine artist. By no means an illustrator. I thought it would be a good idea for her to have some prints made of her work to sell for cheaper than the originals. She had asked me an interesting question.... It is as follows - "If I make prints does that depreciate the value of the original?" I had no idea what to say. Some part of me said yes and other parts of me said no. What do you think?