"If she took the time to get a mount, she’d never catch her."
Jillian is on ground, target is in airspace, not her sides turn (so can't cross zones).
Do all cities have zones where off turn you can't move to airspace, or is that only true of capitals? If it is only true of capitals then the Erfworld wiki is wrong.
If it is also true of regular level 4 city, then Jillian is a noob to even *think about* getting a mount for herself.
All cities have zones. How big or small they are varies with the cities, and what the subzones are called can vary by location. A level 1 may consist solely of a garrison, while a level 2 may be a garrison and an airspace.
The city is currently Faq's capitol city, which means Jillian can cross zones all she wants to, on turn or off. Olive, however, can no longer cross from airspace to garrison being that she is now an enemy of the city. She can leave the city on her own move, but as a prisoner, she is under the same rules Jillian was when she tried to escape from Wanda's garden.
All Olive has to do is stay ahead of the gwiffons long enough to meet a Haffaton unit. The odds are severely tipped in Olive's favour compared to when Jillian attempted the same thing. She just has to flee an enemy city that is surrounded by her Side, and she has a mount already. We don't know what the mount's move is, or how it compares to the gwiffons. Olive is also a Florist, so she is entirely in her element in a forested hex and can use that to her full advantage to avoid detection and capture. Jillian has a freshly minted capitol site surrounded by enemies, and protected by a very small retinue. Jillian needs to make sure she can get back to the capitol this turn, so she can't spend all of her move searching for Olive. Olive has the options of Tannenbaums within the first forest hex outside the city to use as a counter attack against Faq. Or maybe some High Elves. Either way, Olive could spend all of her move chasing down Jillian without constantly fearing that her ruler would be attacked and the entire side falling.
Then there is the Fate aspect of things. Jillian was Fated to have something to do with Wanda and Haffaton. Wanda had to end up as a unit of Faq, or else the events told in Book 1 wouldn't be possible without a LOT more explanation. The exact wording of Jillian's prediction to slay the ruler of Haffaton is missing, but she at least has a major part to play in the downfall of Haffaton. Jillian HAD to get back to Haffaton at some point. We have no indication that Olive is fated to do anything. She could hide out in the forest hexes for a few dozen Turns while Haffaton's cities fall one by one. She could close up shop and go to the magick kingdom to spend the rest of her turns. She could end up as the old witch in the forest that is the subject of tales to frighten the low-level units (for lack of children's tales). She could be shot down by Wanda and croaked. She could be incapacitated and Jillian gets the croakstroke. Marie could inform Wanda that her spell is not fated to strike Olive at all, and Olive gets away. We have nothing on the future of Olive, but we have a LOT on the future of Jillian. Haffaton could get reduced down to a single small city that is easily overlooked, and Book 3 or 4 could be a new struggle between Haffaton and Goodminton.