Misty, you are very good at capturing moments as they happen.
I think you have a great eye for shots before they even happen.
Regarding the photos. Both of the compositions of #1 and #2 are great. It's just that I'd actually think about cropping the dog out... But that's just my opinion. It's a bit distracting because it's only a small area of the dog's side. My opinion is to crop the dog out of both. And you have 2 great looking shots.
Regarding the third shot. Again, great shot capturing her emotion. Nice focus and great depth of field. The positioning/composition is great too. Metered and exposed very well. Great job
Now the black and white one... In my opinion, I like the color version better. There is a lot of color to be seen, and it makes the image a bit more, 'enjoyable' for me that is. I can understand the sense of emotion being shown through a black and white, but perhaps a sepia duotone if you want to eliminate most colors...?
*EDIT* Now that I look at the black and white edit again, it's actually kinda nice. Though I think there needs to be a more distinct difference between the reds, greens, and other colors. I think with a more 'contrast/popping' black and white edit, it will look fantastic.
All in all, I think you have done a great job with these shots, and I hope to see more soon!