"People who know Dickens can enjoy spotting the quotes; others can just sit back and enjoy a rollicking story."
As with Promise and Promiscuity, Ashton's done a fair amount of reading - mainly Oliver Twist, Nicholas Nickleby and A Christmas Carol - and a lot of watching more recent TV adaptations. It's taken the better part of a year to pull her ideas for Olive Copperbottom together and she's now well into rehearsals with director Ben Crowder.
"He's bloody great at helping me to make the sort of quick-fire character transitions you need to make when you're dealing with playing 15 characters by yourself . . . "
Swapping Austen for Dickens is a chance for Ashton to add to her repertoire while sticking with a formula that's won her fans from Stewart Island to Saskatchewan in Canada - and many places in between - for about 200 performances in theatres, historic halls and front rooms.
But she acknowledges none of this would be possible if we hadn't had moved on from the mores and morals of Georgian and Victorian England. For starters, had she been alive in Jane Austen's day she wouldn't have even been able to leave her house without a male escort.
"Let alone travel all over the world . . . and then when you get to Dickens' world, well let's just say I quite like sanitary products and not having to clean other people's fireplaces out in the dead of winter.
"It might have been all right if you were upper class but there would have been no guarantee of that and anything else would have been just awful. I'm very glad I'm alive now."
Ashton takes Olive Copperbottom from Auckland to Wellington, where it's part of the New Zealand International Comedy Festival, and then for its first overseas performances.
What: Olive Copperbottom
Where & when: Basement Theatre, April 18 - 22