Yes, they can avoid it for a brief appearance here, but if the Pike spin-off happens, as many hope and expect, then it needs to be resolved. And in such a situation I hope they just give her some perfectly normal name and forgo any weird nonsense explanations that there has been floating in the novels. Pike may almost always calls her 'Number One', subordinates might usually just call her 'Commander', but there doesn't need to be any inane mystery related to the name. She has a name and in situations where it is needed, it is used.