I could not see the link, but I will tell you, medicating her in no way will have an effect on her art.
Instead, it will allow her to concentrate on whatever she is working on.. School work, reading, conversations or art. My husband is ADHD and the few times he did use medication it really helped. He has an art backgound and was always afraid it would alter his work, but it did not.
Our daughter has also always been artistic and was published early in middle school and a few times also in High School. She seemed to gravitate towards graphic arts in the beginning.
She did a few classes but really wanted her own style to be nurtured in the early years. Once she started having a preference of different types of art, she then would seek out classes. Lots of the local museums offered classes so she took some different ones that appealed to her.
Our neighborhood schools each had amazing art instructors so she always did great with them. She then attended our neighborhood High School that is the Fine Arts Academy and was able to be part of that program and graduated with a Honors in Visual Art as well as All honors Academic diploma.
She is now a double major in College with Studio Art as well as Psychology. She has discovered her passions in Sculpting and welding! But is also studying graphic arts and her drawing has really expanded.
Keep your daughter supplied in all of the tools to explore.. even sidewalk chalk.. Paints, clay, knitting, drawing, crafts.. Puppets. Stories.. All of this will foster her talent and imagination.. Take her to all sorts of art festivals, concerts, museums and nature.. Even a camera.. She will constantly see the world differently than the rest of us.. It is an adventure for all of you.