She wore a split-design costume from the 1970's onwards, and was a teacher at the academy for most of the time, so rarely had to act duplicitously (No pun intended).
When she came back a Triad here, her costume does split, but the design stays the same, just that one of her has a purple costume (with purple eyes), the second is all orange (with amber eyes), and the third is half and half (like her merged form) and has one eye of each colour. Most people probably wouldn't notice the costume on cursory examination.
Given the relatively weak nature of her power (and I say that as a Cypher fan, so I like my weak powered characters), I have no problem with the artist having a little fun with the concept.