Levels in the odd-odd nucleus Nb-100 situated at the edge of a region of especially fast shape transitions have been calculated in the framework of the interacting boson fermion fermion model. Levels observed in decay studies can be interpreted in a spherical basis. Low-lying I-pi = 8(+) and 10(-) states are predicted. Their relationship with the unplaced levels populated with a 12 mu s delay after fission is discussed.