Well...it's a learning process. I've made the Auto ISO + flash mistake...that can be disastrous. On the shot of the parents and Finley, the baby is slightly OOF,as is the dad's hand, and the parents appear to be slightly "ghosted" from one of a few possible things: FP synch giving that 1,000 flashes per second motion blur; subject movement; camera movement; or maybe even VC active at above 1/500 second...the parents are just not "tack sharp", but have that weird, ever-so-slight blurriness that I myself have seen from fill flash used in bright strong light. This is only like your second or third "for other people" shoot, so there's no shame in having had a tougher than anticipated time, or forgetting the way you had planned things. Unless you actually write the shoot's progression down, consider it akin to going to the grocery stores without any kind of list whatsoever...sometimes you get home and unpack the groceries and think, "WTF was I THINKING!!!!"
My guess is the fill flash is so,so close to the ambient exposure that there are two very close, ever-so-slightly competing exposures going on in the first shot.