"...if your characters (or you can just do Shawndra if you prefer, since she seems to be occupying your time and attention at the moment) were going to retire from the adventuring life, where would they settle down, and what would they be doing instead?"
Shawndra fell in love with Nagrand the minute she set foot in it. The fishing is plentiful. The grasslands are lush and green, and the herds of clefthoof and talbuk offer a good living, giving up their skins and meats. Living in Nagrand, after the toughening Shawndra experienced fighting the minions of the Lich King, would be the easy life. If the orcs of Garadar wouldn't put her up, there were one or two abandoned camps or outposts she remembered that would do fine. Just give her a pole, a fire with a kettle, a rude shelter, and she'd bring her knife and live well and happily.
Delgada would not retire easily. If she came to the point when that was all that was left to do, I imagine she would bank all but the necessities, find a corner of the world she hadn't explored thoroughly and continue working. If forced to retire, she would probably find a shallow grave and hand the one responsible the shovel. Sitting idly fishing or twiddling is just not her style. She did enough of that after a lovely piece of scourged toast with honey.
Halinka is rather young and the idea of retiring really hadn't been thought about until now. Halinka loves to read and would happily watch the world go by from the window of any number of places, so long as there was a room with a view. I'm sure Minya would like to see her retire. At least she is no longer hanging out in the Exodar waiting for Halinka's findings. Stormwind is much healthier!
I don't see Dinnaeh (formerly Esoterique) retiring. I do, however, imagine her being the tragic victim of casting fire spells in her sleep. She should probably see someone about that...
That's all I have right now. I looked back at some of my roleplay posts to see who had back stories, and it turns out I have many, but the main characters are listed above.
Now, for the second part of this gift. This is the part I give to you! Comment below if you would like a present of a topic to write about for your blog. I will respond with your very own topic, chosen with your blog's personality in mind. As stated in Tam's post, this is a gift, with no strings. Use it, don't use it, regift it, use it to paper your parakeet's cage, it is your choice!