Interesting observations about the photos. I think it's actually really common for family to release older pictures in cases like this. They choose their favorites where their loved one looks their best. I admit I was sort of bothered that the flyer floating around on social media featured her in her wedding dress because I know that was several years old and nobody looks as good as they did on their wedding day in their daily lives. That said, I went looking for some more recent pics in the media and found a few where we can tell how old they are by the age of the kids. Her kids are currently 2 and 4.
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Based on the size of the youngest child I'm guessing these photos are only about a year to year and half old. IMO, Sherri still looks young for her age here but she is wearing makeup. You can see a few more wrinkles but she is every bit as lovely.
As far as the jogging outfit where the head is cut off I assumed they did that because the person wearing the jogging outfit in the photo is NOT Sherri. Sherri bought and sold clothes on a site called Poshmark. Maybe they never had a picture of Sherri in this exact outfit but they have the ad from the person she bought the jogging top from and that is why they used that photo the way they did. The person who posted the ad might have even posted the photo that way to begin with as it is common to do that when selling things on the internet. Just a guess.