Night terrors

Amanda
Does anyone have experience with night terrors? My 7 year old daughter has been waking nightly with them at 930pm for about 2 weeks. I've tried relaxing music, having her empty her bladder before bed and waking her before the terror to restart the sleep cycle. Nothing has worked yet. 
There has been a big change to her life: a 4 week old sister but I cannot change that. I have gone out of my way give her special time with me but it is hard with a 4 week old and a 4 year old in addition to her. 
Any advice would be greatly appreciated.