Leather shoes getting weed on...

[JumpJockey]

dd1 is nearly three and had been trained pretty well for a couple of months but now has gone backwards for various reasons (we moved houze, she moved rooms at nursery) and usually has one or two wee accidents a day :(. We're tackling that issue, but my big practical problem is that her shoes keep coming home wet as she tends to get to the bathroom then wee before she gets on the loo.
Is there a way to get the wee smell out of leather shoes? :( it's expemsive enough with her feet growing, I really don't want to have to chuck these out. I've rinsed them through and dried with paper but smell is lingering.