Margaret, at times I have seen the WikiTree LNAB rule ignored if a transcription obviously disagrees with the usual family spelling.
And then sometimes the name evolves again in the next generation. So what I would probably do is use the common spelling of the family name at her time of birth for the LNAB and put variations in the Other Last Names field.
Risking a flag for topic, I also want to take this opportunity to deplore some people's entering of names without bothering to capitalize them, as was apparently done with her profile.