If you have legal protection and she's admitted responsibility they can recover your excess, but in my experience it takes a while. Bear in mind that insurance companies will ask if your excess was recovered, because it's a good indicator of 'no fault', so worth pursuing for that alone.
I have a tiny car park ding on my nearside rear arch. No paint damage and so small that it may have been there when I bought the car. I only detected it when checking after Herr German parked ridiculously close in a massive car park space.