You can buy cheaper than u can build. Look for a building / barn / shop near you. Maybe some space for office/her hobby. Maybe get some land too.
My shop building is 2 miles away. No complaints from wife or neighbors. No HOA. 3 phase power too. This shop I own.
For a couple years, I rented a commercial unit in an industrial park. Other guys had shops there, so I lent and borrowed tools and expertise. I miss that connection.
Otherwise there's always the basement or a lift for her car.
Or she could get an off shift job so that pesky car isn't in the way of real work.