Last night Sydney had a night terror. It was pretty creepy. It lasted about 30 minutes, she also had one on Friday night. I've learned that they are mostly caused by lack of sleep or a major change in sleeping habits. Since she started going to preschool in the afternoons, she isn't getting as much sleep because she isn't napping on those 3 days. We're going to try to bring back an earlier bedtime and see if that helps.
Hopefully, her sleep schedule adjusts soon...night terrors are very freaky!