Heya,
Looks like it's time to add a gel to the mix so that you can mix your flash temperature to ambient temperature better, it will look less flashed. I would start with a 1/4th CTO or 1/2 CTO. I just buy the stuff in sheets on Amazon (12" x 12") and cut it myself to fit my lights and I just use velcro tape to attach it. Cheap and works. In this case, the warm sunlight temperature needed a similar warmth from your flash, and flashes are typically daylight temperature (5200k~5600k) versus the 9000k or so (just guessing) of that sun temperature.
As for lighting, I think if you meter it to mostly fill, it will blend into the ambient better. Here I think it's metered to be almost key level exposure or just a hair below. Also, I can't be sure, but I would try to get the lights closer to the subjects, to get more wrap around. What size modifier did you use and how far away?
For focus, when the sun is directly entering your lens like this, your system will have a hard time nailing focus because the flare is in the lens and causing a lot of contrast so the AF system will hunt and not get it in focus often. If you shield the sun with your hand, obtain focus, then move your hand, you can get crisp-in-focus shots with direct sun a lot easier.
Maybe clone out debris that got stuck on mom's legs in #2.
It's pretty easy to see that you used blur post processing on the foliage behind the tree, the edge of your brush needs to be much softer to blend it if you want to try to do this. I would be interested to see the background without the blur processing on the foliage. I can see a sliver of it in the first image at the tree trunk, and it's busier without the blur, but I think natural without the processing would look better than the processing is presenting here.
Here's an example of some 1/4th CTO gel sheet, cut and velcro taped onto some speedlite heads:

IMAGE LINK: https://flic.kr/p/AKgJCZ
IMG_6076
by
Martin Wise
, on Flickr
Very best,