What is this?

Kaitlyn had another seizure of some sort yesterday. I am not sure what it was, but I am hoping that maybe one of you might have experienced something similar to what she is having so that way I know what it is. She has now had 3 of these episodes. The first 2 I didn't witness, my husband did. I saw the end of the 2nd one and it was almost exactly the same as this one. When I went into her room to wake her from a nap yesterday I found her laying on her stomach with her eyes open and she didn't look right. I went over to her and she was having this little jerks and twitches. Her eyes were jumping around and were dialated. I picked her up and she was limp and then went stiff and then went limp again. I was holding her like a baby across my arms trying to talk to her, and she wouldn't even look in my direction. She would sream for a half a second and then would stop. This went on for about 4-5 minutes and then stopped. After it stopped we sat in the chair and she just sat there, not saying anything, not moving but her eyes were responsive when I would talk to her, still dialated. She just sat there for another 25 minutes. Finally 30 minutes after I found her, she got up out of no where and was playing again. She acted like she was out of sorts for the rest of the evening. She was irratable and grouchy. The first time that this happened, she had a long day and took a late nap. The second time I don't think there was anything really going on. Yesterday she had woken up early, went to bed late the night before and then took an extremely long nap. She normally takes a hour nap, and yesterday it was about 2 1/2 almost 3 hour nap. I don't know how long she was like this before I went in there. Anyone know what this is?? Thanks! Emily