Were you the last one who could have avoided it?
Texas has (maybe had?) an interesting traffic law – the last person who could avoid an accident was required to do so. This means, for example, that if someone runs a red light when you have a green, and you see them and don’t try to stop, you will be held partially liable. The reason for the law, I suspect, is to keep folks from thinking they’re okay as long as it’s “not their fault”.
I think it would be good to apply this principle in marriage. Be proactive about avoiding problems, even if the problem would be “her fault. Do all you can to avoid a misunderstanding, even if the fault would clearly be hers.