She doesn't notice Gray's presence

Mira had failed to sense Gray's presence and went into the ladies room, much to his obvious displeasure. It was then that Gray saw the ladies room through Mira's eyes and was shocked by how much nicer it was than the boy's room. It was clean with five stalls and sinks and there were flowers on the counter tops.

"Man, Makarov went all out in redecorating this place" Gray said to himself. He was so enamored by the beauty of the ladies room that he failed to notice Mira entering the first stall and locking it. As Mira began to pull down her pink panties, Gray was suddenly reminded of his situation and frantically tried to get Mira's attention before she relieved herself. This fell on deaf ears as Mira rested her butt on the toilet seat and peed a tremendous stream, much to her relief and Gray's embarrassment of seeing this.

He was straight, but Ur always told him to never peep on a girl when she was changing or relieving herself, unless the girl wanted to. The stream eventually died down, and Gray was further embarrassed when Mira began to wipe herself, completely unaware of Grays presence. After that, she simply pulled up her panties, flushed, and washed her hands before vacating the restroom.

Now what happens?