Workaphilic
Having a great deal of fondness for work, but not addictive or compulsive like the workaholics. People who passionately love their work to the extent of worshiping it.
She does not have a compulsive and irresistible urge for work and is definitely not a workaholic. But, she is absolutely committed to her work, deeply loves what she does, and is an inspiration for her coworkers. I would call her a workaphilic.