White Fielf Green Sheep

[milo]

leanne - tricky to make yon clear since it means neither here nor there, but somewhere other there, sort of.

I think she means you are using the word incorrect idiomatically.  For example:

"he's gone wandering again yon down by the river"


would less awkwardly be:


"he's gone wandering again down by yon river"


etc,. etc.