Daisy didn't always show up at the casino to check on Fitz. Sometimes she showed up to bug Phil, or actually play a few games. (Though, really, she was usually asked to leave after the 3rd or 4th one, because hello, computer brains.)
It was hitting close to dinner time, and Fitz still hadn't surfaced, so Daisy headed down to find him, and maybe dig him out of whatever had buried him.
"Well, I could run away with the girls and raise them as my own. I'm sure Hermann won't mind raising them with me."