Heris Serrano Trilogy and series

The novels explore the effects of effective life extension technology, with some good handling of details - for example, what happens in the navy when neither admirals nor top level petty officers will ever reach retirement age? Moon suggests that apart from emigration, the long run logic points at aggressive military expansion.
Another possibility would be an increasingly militant "youth" culture. Part of the whole boomer problem was that the later boomers faced an economy that was oversupplied with labor at their age and experience levels, creating intense competition for jobs and economic stress; a measure of cultural alienation might plausibly follow.


Sporting Chance (The Heris Serrano Trilogy Book 02)

Book: by Elizabeth Moon (01/01/2001)

Heris Serrano, who resigned her Regular Space Service commission after disobeying orders for good reason, chose not to go back when her chance came at the end of Hunting Party. In this trilogy's second volume, Heris is still captain of Lady Cecelia's yacht; but she now has several members of her former crew with her, including the man who couldn't be her lover in the old days.
After delivering Prince Gerel home following certain embarrassing events on Seralis, Lady Cecelia orders the Sweet Delight into a redecorating company's drydock. As Heris prepares to oversee the yacht's refitting, she feels great uneasiness about Lady Cecelia's safety. But trouble, when it comes, strikes the unconventional old lady down in one of the places where she should have been safest. The family rebel, who never needed anyone before, lies helpless in a blind, mute, paralyzed body; and the only people who know she's aware inside that body, Heris and two of her employer's young relatives, also know that what felled her wasn't a massive stroke. As her enemies move to lock Lady Cecelia away permanently and take control of her vast holdings, the disgraced ex-RSS officer and two young socialites form a desperate plan. (Lady Cecelia de Marktos is rejuvenated)

-- Jeffr_2bya

Winning Colors (The Heris Serrano Trilogy Book 03)

Book: by Elizabeth Moon (08/01/2013)

Winning Colours concludes Elizabeth Moon's "Serrano Legacy" adventure-SF trilogy, whose previous novels are Hunting Party and Sporting Chance.
A book of crises (and aunts) in which the consequences of Sporting Chance play out in political confusion and space battles. Lady Cecelia has decided to use her new lease of life to breed horses, always her passion, travelling aboard the Sweet Delight, which is now owned as well as captained by the inimitable Heris Serrano. Meanwhile, three older ladies (the aunts, including an Aunt Admiral) must resolve a political and medical crisis involving the drugs necessary for the process of rejuvenation,? where the wealthy old can become young again, indefinitely.
Captain Heris and her cranky but highly acute patron Lady Cecelia are in their tightest corner yet, visiting a planet that's due to be torched by a raiding fleet from the villainous Benignity of the Compassionate Hand. Only their lightly armed space-yacht Sweet Delight stands in the way: the official defence force is commanded by traitors. Of course resourceful Heris contrives a daring last-ditch scheme, but still seems doomed ...
Another storyline features the various young, foolhardy offspring of merchant princes and clones of royal scions who repeatedly risked their necks in previous books, and here tangle with revolutionaries enraged by the concentration of galactic power in the hands of repeatedly rejuvenated oldies. En route there's a fair bit about horse-breeding, and a tongue-in-cheek justification for sound effects during space-battles in vacuum.
After subjecting her characters to nail-biting peril (with one small mystery frustratingly unresolved), Moon dishes out happy endings with a touch of sentiment that goes down well--since we've come to like most of these people. And, just as in P.G. Wodehouse, the prime motive force in the galaxy turns out to be aunts.

-- Jeffr_2bya