Did they kick it in the guts to see if it turned over when they got there. If it turned over there is a good chance you will have got away with it.
The time to worry is when you get a sudden spike and then the gauge drops ( you will probably not be looking at the right time to see it ). Once the coolant level drops to far the temp probe will not read a high temp. If its still reading high it means it still has coolant and they are pretty tough.
If she is rooted
Look at this and make the most of it.