Crash investigators do this for a living?

Just make sure she lives in a one party consent state...or it might be illegal to record conversations without the other parties permission
Tell them you are recording. If they say you can't, ask what they are afraid of. Will give you something to think about. I'm in Florida, which is a two party consent state. Had a situation with an insurance company, that wouldn't agree to my recording, but their system says they record all calls. I said "fine", do everything by USPS, and hung up. Then you have everything in writing, which is actually easier to bring to court, if it is necessary. From personal experience, don't even trust your own lawyer.