Ah, yeah, then you're in the situation that Arkhams Finest described. It's okay, but your insurance company isn't under any obligation to pay for it since she was insured. It frees you up from dealing with her company. My previous truck got rear ended several years ago. I dealt straight with the other guy's company. Got them a quote from a local shop, let their adjuster look at it, and they okay'd it, and paid for a rental truck while mine was in the shop. (crumpled right rear corner, so it took about a week and a half)
I didn't pay a penny. But you have to get on the other company right away and pester the **** out of them if they don't respond. I'd make several more calls, note the times/dates of all the calls, and report them to the BBB if you don't hear from them.