@Bä ***
Female immigration officers can be OK but they do tend to make more mistakes than men. When I left for Laos with my car several weeks ago at Nong Khai, the female officer forgot to stamp my passenger form that every car owner receives when exiting Thailand. A male customs officer checking documents as you drive through the checkpoint before the bridge wanted me to go back and get the stamp. The next two guys after that said it wasn't necessary, so I drove on and crossed the bridge.
While there was no issue whatsoever, it was the first time this had happened as I take photographs of all the forms I've received every time I take my car out. I checked my computer and couldn't find a single one which wasn't stamped with the same exit stamp you receive in your passport.
Anyway, no problems on return. However, it turns out she also made a second mistake, which only became known to me when I was re-entering the country. The lady forgot to note that I have a re-entry permit and thus the immigration officers at the checkpoint where I re-entered, namely Chong Mek, made a note of this and contacted Nong Khai to let them know. This caused an additional 2 minute delay as they were stamping me in.
I should have insisted on going to the guy next to her. Next time I cross at Nong Khai, I probably will.