is there a friend who can lend you one to see how she goes on?
I'm predominantly right handed but play pool / snooker left handed. Go figure!
Was just worried a cheap one would put her off sticking with it
That really won't be much good.
I would honestly wait until shops are open so she can sit with one and put her fingers on the strings.
It's quite funny when I see your name, one of the best bass players I've worked with is called Dec Brennen
If you can wait it out hold off until you get get to a guitar shop so she can sit down and try them, look at them and feel them, a guitar that doesn't feel right or doesn't look right means she wont want to play it.
Also unless you have reason or she strictly wants acoustic let her try out some electric guitars, much easier to play for a new player.
This doesn't mean it has to be an expensive guitar but at lower price points there is a big difference between each model.
As for Lefty, if she has no experience I would highly recommend getting her to try holding it right handed, if she sticks to it the choice is much much bigger going forward.