Thread creep but thinking of the comments on driving, does anyone else have this sort of problem?

When driving with my mum, say through Norwich which I am new to and in need of directions, she tries to direct me by pointing. Most of the time, because of the angle I am looking at her hand, I can not tell whether she is pointing stright on or right, signalling middle lane, inside lane or what.

I've had a few rows with her on this and have tried to ask, "please give instructions like turn left at the next junction, get in the right hand lane here, etc. rather than keep me guessing which way you are pointing.." Am I being unreasonable?

Jon Jon