It seems that the OP owns a tool but it wouldn't work. I am getting a little confused here - He also says he has the keywe took a set of dynomec ,but because the lock nut has a floating head it is not suitable.kind regards bryanso although he has both, he still has to use a hammer and chisel...?yes she had key for locking nut
No doubt the RAC have a protocol for this situation and the patrol obviously checked with his controler. The young lady is an adult and refused the offer of help that was made. I don't see what else could have been done.
I would be interesting to hear the other side of this - I suspect that English is not the OP's first language, so there may have been a communication problem as well.