Rune
Once A Fool
Actually, if you do have her disappear in the crowd, it should be very easy to have her reappear where and when you need her to. And I very much like the idea of having her charm the crowd to slow down the pursuit.
Oh, and here's an idea: If you want go with a maze, you can make an ever-shifting one out of the crowd itself. Give it an initiative count and move the people in it every round so the path through it keeps changing. This can be done pretty easily and quickly if you just spread out a bunch of pennies on the map and the slide them around on the initiative count. Of course, if the PC is willing to forcibly move people or can otherwise bypass them, it won't slow him down for long.
Oh, and here's an idea: If you want go with a maze, you can make an ever-shifting one out of the crowd itself. Give it an initiative count and move the people in it every round so the path through it keeps changing. This can be done pretty easily and quickly if you just spread out a bunch of pennies on the map and the slide them around on the initiative count. Of course, if the PC is willing to forcibly move people or can otherwise bypass them, it won't slow him down for long.