I set Veronica to wait somewhere for about 8 in game hours and when I came back to the spot shes not there. I have checked the entire area around the spot but I can't find her. I even went back to the 188 Trading Post to see if she ended up there but to no avail. Please help.

Try waiting a full 7 game days, then go back to trading post 188. She should be back there after that. (Do not wait in the same cell as trading post 188. This was suggested by a dev in another topic.)

Good luck.

Thanks for the info!