Wolky Jewel sandal- single shoe or odd sized pair

Ok, this is a long shot... looking for a shoe "mate" for my mom. She has to pay for two pairs of shoes just to get a proper fit due to her disability- lame. Left shoe is a 36 eu and right is a 37 eu. Will sell as a single or perhaps there is a person out there with the opposite wonky foot thing going on? Anyway, heres hoping!