then or than

I've just read yet another example of someone writing 'then' instead of 'than'. It's in an article in news.com.au about a soon-to-be published book of dog photos. The article quotes the photographer, Carli Davidson:

"I shot [photographed] over 100 dogs, but some chose not to shake, so I scheduled a lot more then I needed."

Presumably this was a spoken quote, so whoever wrote it down decided on the spelling. I wonder if Ms Davidson said 'then', or whether she actually said 'than'. 

As I've posted previously, I believe that in the next few years the word 'then' will replace the word 'than' in this context.