D.N.
There are many distributors to get the shoes wholesale or she could contact the manufacturer with her proposal. However, I would exercise great caution because some of these "distributors" will rip her off. My husband was ripped off when he had a store. Luckily it was only a couple hundred though it could have been thousands.
Never fall for those websites that state they sell name brand shoes at really discounted prices and the shoes come from China. A lot of them are counterfeit items and she could really get into trouble.
I forgot, there are conventions for wholesalers that she could visit. I think they are usually in Vegas but sometimes in Chicago and California. She could try talking to another small shoe store owner. A chain store manager may not have any info for this.