We haven't discussed it.
I figure (you can use "we" for "I" here) if I am ever genuinely in danger of suicide then I would be pretty determined to do it and wouldn't let her know about it anyway, because she would potentially ruin my plans. If I were genuinely suicidal I wouldn't want that at all.
On the other hand if I am not so suicidal that I can talk to her about it then I don't need to talk to her about it because I am not truly "suicidal".

So no point in a suicide plan for me.