At a roadside rest along the way.
We are camped on public land within the monument boundary but not where the main visitor center and campgrounds are located. There is no one else around. There is this variety of cactus that grows here only a few inches above the ground and that which is among the grasses is difficult to see. Beans avoided it really well but finally got a few stickers in her hind foot.
At this point I carried her back to the RV and wondered if she would let me get the stickers out without a fight. Nope. Ever sit on a cat and try to pick stickers out from between the pads of their foot? Great fun. I finally got a clump of three and then let her go. She was really mad but a few minutes later we were friends again. That must have been all the the thorns as I haven't seen her working on her foot anymore.
I've been here to Dinosaur monument before and don't think I'll drive on in any further as nothing has been added in the last 65 million years so why go and deal with all those people?