When taking a turn, it helps body position if she looks over your inside shoulder through the turn.

If you don't have helmet communicators, come up with some common signals (I'm hungry, I'm sore, I need to pee).

Make sure that she KNOWS that you are ready for her to mount or dismount the bike.

Fay and I have been riding together for 50 years this year (I picked her up for our first date on a bike), so there's so much of it we do naturally without even thinking about it ....

Lannis