New here. Wife and mother with anxiety and depression

Hi guys,

I need help. My wife's long history of anxiety and depression is destroying our relationship. Every attempt to communicate with her is really hard and there is never a right time to talk things through.
I feel like the only thing keeping us together is our daughter who is almost two. I need some to talk to about our relationship as keeping my feelings to myself, which I feel like is my only option because I feel like I can't talk to any friends or family about it, is only making things worse.
Cheers.