Hard to tell from that shot. It just could be she's laying on her tail. Get a closeup or a side view. Also feel her she should feel hard and swollen with her scales looking like they are being streched apart and her belly pattern creeping up her sides from the swelling.
Either way, I love the little "dog bone/hook" pattern on her back. It could be an ovy but her behaviors in the pics kinda leads me to say no. From my experiences when building they will have a tendency to wrap their water bowl, when ovulating they have more of a tendency to stretch out straight in the tub. That by no means says she is not ovulating, JMO. Really hard to tell sometimes by pics. I usually tell folks if you have to question it...it's probally not. Ovys are normally unmistakable.