I doubt that she had a printer in her van, but perhaps she did. Still, the maps would be 8.5 x 11 format, not a real map.
RSBM - it was me who introduced the idea of using a printer. Rather than in the van I was thinking maybe at the farmhouse before she departed for Spain she might have printed off a load of maps for the area. I mentioned up thread that it's what I do personally, and they are of the same quality as the proper maps I also own, but more convenient I find.
I'm not heavily invested in this theory though, I've seen no evidence one way or another about the exact maps carried, only the reference to "physical map" with phone backup in the dossier.