In looking at image 2 'slightly out of focus', noting that using a 50mm lens, aperture at f9, and the distance to subject about 3m, you would have a
depth of field of
at least 1m. So the chances of the subject simply being out of focus due to the AF are pretty low - the DOF is huge here. Pretty much everything in the scene is going to be in focus, unless the camera AF was back or front-focussing at least 50cm or so from the subject, which seems unlikely.
Image softness isn't always a focus issue. Perhaps you are just seeing motion blur, caused by either subject or camera movement. Are you using flash, or just continuous lighting? If you are using continuous lighting, maybe increase shutter speed, and/or shoot with better stability.