I agree that this was not a "for personal use" purchase.
There is a lot of money involved in this.
Certainly the store would have asked her 'why?'
The fact that the store agreed to go ahead with the purchase must mean that they approved of what she was doing.
Another answer would be that the woman knows the manager somehow.
There is more to this than we know. It may be altruistic, or sinister. We just don't know the whole story.