BALANCE in the sports of XC/T&F is SUPER difficult, but possible if you 1). give up on trying to be "successful" or 2). are a coach who is fortunate enough to be a part of a large and very supportive coaching staff, have a saint for a partner, and without needy student-athletes. They need to be very self-reliant after freshman year. Period.
It's not for you to decide if this person's personal relationship is balanced with her career. The whole concept of "balance" is skewed what with average work hours that spill over into 7-10pm in the evening and ALL day every Saturday once track starts. Coaches get pulled over to campus or play catch up with work on Sundays and it can quickly fall apart on the home front. Competitions all three seasons is unlike anything else we see in college sports.
Indoor track and field kills balance. The sport needs to be eliminated. Here's a fun experiment: Walk over to a coaches' huddle 45 min. or about half way through the 60 heats of 200m and listen in. There's an honest look at how difficult it is. Dinner time on a Saturday night over Valentine's Day Weekend and they are standing around waiting for another never-ending indoor meet to be over knowing they have to get athletes home in bad weather and everyone is Exhausted with a capital E. Oh, and to top it all off, the meet won't be scored so the AD doesn't even see the point in spending the $3,500 it cost in the first place! No feather in the cap for a "successful" day.
No dog in this fight, but just don't judge coaches and their very challenging circumstances they navigate every day with hundreds of relationships. Everyone's situation is unique and even changes from year-to-year depending on circumstances.
All that said, it still beats digging ditches at the local cemetary or selling shower curtin rings in Wichita. But don't give me this business about "balance" being easy to achieve and role model for the kids you're educating. It's hard to have your cake and eat it too. You don't need to read Malcolm Gladwell's Outliers to know that.