Preparatory to writing this message, I read a bunch of recommendations that others have given Michelle. One would be forgiven for thinking they are hyperbole. They are not. In about 30 years in the industry I have met very few people I would put alongside Michelle.  

It demands one set of skills and talents to manage the engineering functions of a company working on a complex code base while supporting a large, growing and diverse set of clients. Not many can claim those skills. I have seen Michelle do it, and do it well. She works hard to listen, and apply support and guidance where it is most valuable, while also staying out of micromanaging in the weeds. This gives her colleagues space to function and to thrive. She ensures that they do. She is a catalyst for success. 
It calls for a different set entirely to nurture a culture in which people across multiple disciplines feel invested in the success of their colleagues. Talk in this area is cheap. Michelle leads by example, day in and day out exhibiting the best of behaviour. Doing so, she has earned the respect of people far outside her engineering area. Her contributions to the engineering function were enormous. They were not at all the full extent of her contributions at Workhuman. 
Everyone should get a chance to work with someone like Michelle. If you get the chance, seize it.

Phil Hourihane, Architect, Workhuman