I don't think its about getting older for her and more about getting in shape and slimming down. I liked her boobs before but I applaud the last video where after 6 months she decided to whip them out. After months of playing it very safe she came out with something pretty satisfying. She's kind of earned her next few videos being non-nude if she's willing to show boobs or ass in the near future.
I think she regrets doing the more sexual stuff. Now she just dangles it out like a carrot every now and again to maintain subs.