Imagine you are a part owner in a store with two other people...

The store’s concept is based on very original and handmade items. The three owners all make very different items. They need to invite in people who can pay for space to sell their own handmade items too, so there is some double-up on some items, but their designs are so different, that everyone seems happy with their edge of the pie. Until one of the owners has a friend who makes a type of soap. One of the original owners makes handmade natural soaps and their brand is based on truth in labeling and promoting the most natural products possible. This new soap is made from a melt and pour base and it contains chemicals that are not listed on the label. In fact, the ingredients list is non-existent on this label all together. The melt and pour soap shows up in the shop without the soapmaking partner even being asked whether it is ok or not. The labels on the melt and pour soap make medical claims that the soap cures eczema and a host of other problems which is pretty illegal and certainly not ethical. The friend with the melt and pour pays NOTHING for her space in the store because she offers to watch the store for a few days a month and uses her influence to sell other things too. What should the part owner do to counter the crap soap encroaching on her territory and stealing her customers through pure lies and bad chemistry?