I am laughing at her and my voice changed. I'm not sure if you wanted me to correct that sentence you have a very unclear question
Did we mention he’s 13 years old?
?
If we imagine ourselves in the scene in which the witness speaks with a firm and confident voice saying "that is the man I saw", the most probable thing is that it convinces us because she is very sure of herself, the witness does not doubt it for a moment, she/he is stating it.
The word <u>averred</u> can be replaced by <u>stated</u> since they have the same meaning. Other synonims can be claim, declare or affirm.
They feel comfortable in their own current positions and only care about privilege if it actually affects/bothers themselves.