Hey! I believed you asked what triggers are. If so, triggers can be anything that turns on these thoughts she is having. Triggers cause a reaction. Like, for example, I have depression/anxiety/panic. For me, when I get overwhelmed by school work it triggers my anxiety and it rises. Doing bad on a test triggers my depression to go up.
I don't know what kind of triggers your neice has, but if it is at her parents house it could be a number of things. Sometimes my parents trigger things. Like when I feel like my parents aren't listening to me, that triggers alot of emotion from me. If my parents ever yell, that is a huge trigger.
Triggers can be anything from huge things to the simplest things. I have been working with my counselor to reduce some of my triggers. Such as stress from school and such.
But, I think your neice is doing all the right things in getting help and I think that's good. It's good that you are helping her and being supportive. Just let her know that you care and you are there for her. Try to learn more about her and what she goes through so that you can understand better. In my opinion that would be very supportive.
I think you are doing a great job so far though! And hope I hope the best for your neice! Keep us posted. Wishing you the best, Tennis.