Uhhh...

[Animallover3541]

Have you looked around the yard? You'd be surprised how good chelonians can be at escaping. I thought I finally escaped proof my red eared sliders tank but alas she escaped and tore out a claw. Turtles can move fast, but not super fast. They may still be around there and if something really did get them you should be able to notice some sort of disturbance with the enclosure or on the ground around it.

Best of luck to you!

I'm sorry, it appears I skipped over the part where you mentioned the disturbance. Still, I would look in the area around there as she would likely be close if she did escape.