Did they just change the name of the NPC? The name on the costume on the TP Trader is also as Vaivora 
I mean, so many bugs and this is the priority? xD
She was complaining because others would look her weirdly, she catch a conversation of 2 ladies next door calling her “bad mother-in-law” for being called Vibora.
That’s why they changed her name.
That change has been there for a long time now, at least over a month.
It was actually done to represent the games setting, as you know the game draws influence from Baltic mythology.
The name itself Vaivora is derived from vaivorykštė which is Lithuania’s term for rainbow, hence the npcs association wearing rainbow armbands. I personally don’t know a lot about Baltic mythology, but it is nice when things like this are corrected.
Sometimes things are mistranslated because the person cannot understand the full meaning of what is being interpreted. In Hangul, Vaivora is written as 바이보라 - this can be romanized in several ways because there are some characters that can be used to represent various letters in English language.
in short summary the first characters 바이 can be:
- Bye
- Bai ( cute bye ??? )
- Buy
- Bi
- Vi ( league of legend character )
보라 can be :
- Bora ( a girl group singer )
- Bola (the weapon)
Hopefully you get the gist of what i am trying to say, It’s just sometimes a natural error or oversight.
Well, changing lines in a document is easier than debugging client issues in any circumstance. 
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