My best friend has depression and anxiety just like me and she texted me in the middle of the night…

My best friend has depression and anxiety just like me and she texted me in the middle of the night last night asking for help and wanting to talk but I was passed out. I know she has her bad days but she’s never actually showed me that side of her until now. I feel so terrible, but I’m glad I’m there for her because I know those feelings and understand those thoughts