But did experience the "DOS" -- Drop Off Syndrome -- with one, whose name escapes me. In fact, it mirrors closely your experience, it seems, CDL.... Saw her twice many years ago, maybe three times. She was young, hot, enthusiastic -- gave a great BBBJ, did CIM, multiple pops and any position you wanted....
She eventually "retired" back to Korea. Two or three years later, I saw an ad that looked just like her. Booked and boy oh boy was I sorry I did. She had put on weight, stopped working out, had cut her hair unfashionable and unattractively short (for easier care), dressed poorly and had developed an attitude of: "well, let's get this over with." CIM was off the menu. Kissing was restrained.
Saw her that one time and bid her a fond adieu....
But that is my only experience with retirees coming back....
CR
PS If Chinese Emily -- the single most amazing hobbyist I have ever seen -- ever gets back to America, it will be with great fascination that I see if her enthusiasm level and performance remains the same....