Triss,
It's a great idea, but violets are a funny plant. They need a small pot to get root bound. They are very finicky and hard to do right.
If you don't have a small pot they will actually grow and second center - a whole new sub plant - as follows:
Looks lovely, right? Here is another shot --
It also has a third side very much like this one. That makes threeplants in one -
Why? Because my sister transplanted it into about a 5" pot and it was way too big... the thing just keeps growing more whole plants...
It should have been replanted long ago. But, I don't want to deal with it either!!! That would make two more violets...
The long and short of it is - the 15 afore mentioned violet leaves indeed need 15 small pots!