I have said it before...if she is planning to do this for several more years, she should increase the size of her breasts again.
She is still very, nice looking - but she is 41 and no spring chicken. And there are a TON of gorgeous, busty gals out there to compete against. She needs a bigger edge.
The fact that she is starting to do harder stuff (whereas she NEVER did before) smacks of desperation.
She needs larger breasts...period.