Determined Underachievers Thank you for the advice.
In case it helps people to give further advice, the lady can ring plain hunt well (by counting places), but the sticking points are: moving on to methods and acquiring ropesight.
She explains, for example, "I have too much else going on at the moment", or "I can only do things the way I can do them", or "I just want to ring for fun".
She becomes upset if I say, for example, "you were ringing too fast and so were in the wrong place when you dodged, even though you thought you were in the right place".
I guess she thinks - "I didn't want to do this anyway, but you made me do it and now you criticise me for not being able to do it".
So I guess I just have to accept that she's a volunteer, and let her do only what she wants, how she wants.
But this goes against my understanding that it is my job to develop the skills both of individual ringers and also of the band.