User blog comment:FairyRaven/Fairy Tail Chapter 365: Fairy in the Jail!, Review and Commentary/@comment-2214433-20131230134051/@comment-7418318-20131230144811

When I saw that I thought Kyouka punched her claw into Erza's belly and was rummaging around in her intestines...

Considering the lack of a hole in her belly later that's obviously not what happened, but from the angle of her arm, it's clear that she didn't grab far enough down to reach her crotch, unless she can bend her lower arm in places that should have any joints.