Rylee

Rylee is a human trader originating from Vault 81. She can be found at Longneck Lukowski's Cannery, arguing with the current owner, Theodore Collins. Afterwards, she can be found at any unmarked location for random encounters. She can be recruited as a general trader rank 4, as soon as you have the trading emporium (rank 3) built in one of your settlements with a population of 10 or more.

Encounter locations (after initial encounter)

 * Campfire northwest of Westing Estate
 * Campfire south of Walden Pond
 * Campfire north-west of Old Gullet sinkhole
 * Campfire south of Peabody house

Appearances
Rylee appears only in Fallout 4.

Bugs

 * If you talk to Rylee while she is still inside "Longneck Lukowski's Cannery", she'll bug out and start pacing frantically. She may even walk away in mid-conversation possibly locking-out a dialog branch. She'll also initially comment "sorry I brushed you off in there" despite not being outside. If you try and send her to a settlement anyways, she'll refuse and that settlement may get grayed out as an option despite having room for more settlers.
 * Sometimes it won't give the option to "hire" her, instead the Sole Survivor may only trade with her or talk to her about the sick people she mentions while at Longneck Lukowksi's Cannery. This seems to be caused by not speaking to her during her initial encounter.
 * If hired successfully and asked to move to a settlement, she may disappear after a while. Settlement population will initially go up when she is recruited, but then go back down when she disappears.
 * Under certain circumstances, she can be successfully set to a settlement: Travel to your chosen settlement, and if she has failed to appear, use the command in the console to select Rylee, then use the function, followed by , then.
 * However she may never lose her status as "Hireable", continually offering the dialogue choice of being able to be recruited, and may continue to perform a default action (such as farming) even when assigned to the Trader stand in the settlement, and acting/speaking as if the player had met her in the game world. A potential fix is to use the console command and then talk about her vault suit.