That would be great! They wouldn't be in direct competition with each other (the elves have made simple special-order garments out of a single raw material before, but it would be very expensive so not a lot of people have probably used that service) so I think the elves would be open to supplying her with stuff in exchange for clothes! They could also sell her clothes in the store and give her the proceeds.

Are there specific supplies or tools she might ask for?

Also Lup has a rad winter coat that got shredded by a shadow monster, she would absolutely pay Tataru for fixing that some time, lmao.