Matrioracle

A decommissioned SEALS-style high-g extrasolar amphibious combat operative retires to a warm 'n dry backwater colony planet to live out the rest of her days in decadent primitivist luxury, lounging in an abandoned temple and pampered by the awestruck natives. It's all fun and games playing the role of a demigod until the grief-stricken locals beg for help with a problem even she can't solve.

For full narrative impact, compare her service tattoo with the sigils on the natives' robes.

Happy Mother's Day!