I'm certain you are aware of why you're paid that money.
"...it's been a team I've grown over the last 10 years ... and have a responsibility to maintain and develop the culture that's taken a long time to establish."
To others reading this, this is clearly why she is paid so much. Ten years of successful hard graft building a team of a 100 people.
Yes, day to day, there may sometimes not be anything too pressing to do. But to be successful over such a long period means thinking about so many different areas and possibilities of what may happen and pro-actively planning for these eventualities that being successful for ten years or so isn't just done by chance.
I have no idea what area you work in (although I can probably rule out some - especially City based - occupations), but this sounds really great.
And I also remember a line from a film where the boss of a company says this:
"Do you care to know why I'm in this chair? I mean, why I earn the big bucks? I'm here for one reason, and one reason alone. I'm here to guess what the music might do a week, a month, a year from now. That's it. Nothing more."
A large part of managing is to anticipate what might be coming.
Outside of certain occupations, many roles offering these sorts of levels of pay involve managing teams and developing teams. Doing this well often involves a lot of work but that work isn't always paperwork.