I think every time my daughter smiles at me I stop having suicidal thoughts
Do you think you'll ever try to kill yourself again?
I won't ever try to kill myself again.
It's good that your daughter reminds you that you have a reason to live. You should come up with other reasons to, especially internal ones to better support yourself when you're feeling suicidal.
If you ever hear my daughter is dead, remember I killed her, so I could go out with her spirit.
It sounds like you might have some deeper issues that you should get immediate attention for. You shouldn't fixate on your daughter in such an unhealthy and violent way.