character witness

[Texas Aggie]

what would you have told her

If it had been me or a client, I'd (or my client would) tell her that I (he) don't (didn't) recall it and do not notice me (him) for a deposition or testimony.

While there's probably some legal protection for a witness (depending on your state law), this isn't an issue that calls out for something like what happened to be brought out in the open in a divorce case. If you witnessed him harming his child and children are at the heart of the matter, then maybe you do it then. Anyway, most people would blow off any non-physical harassment of an official. Your testimony would mean absolutely nothing.