Expense graduate school tuition for new but related field of practice?

This is a little bit of a niche question that I am hoping someone can give some insight into. Facts of situation:

 

Married filing jointly

Husband files a W-2, Wife runs own acupuncture clinic and we file a Schedule C

 

My wife is a self-employed acupuncturist. Her practice focuses on mental health, anxiety, etc and utilizes a practice called Hakomi. She has also decided to expand upon her skills and go back to a graduate program to get a degree in Therapy/Counseling.

 

The question is, can she expense tuition and school related expenses as part of her Schedule C for her business? She will be utilizing the skills that she learns at school even though it's not a direct relation to her current self-employed job. It's a complement to it, and is in the general "field" of what she focuses on now.

 

This is in a grey area, and just looking for advice on if we can expense these things or not. Thanks!