"or did she teach them the 'right' way and told them" ... there is ONLY the right way to do it. If the kids do it "the wrong way" they don't get credit.
Question: "Given that the new primary maths curriculum no longer includes the chunking method in division calculations ... assessments in maths will give credit for a pupil’s working?
Answer: "...chunking will not be rewarded in method marks — long division will."
*"Chunking" here refers to the method of the parent article. Chunking has been removed from the curriculum and only the traditional method will receive credit. That's the definition of bad math teaching, from the UK government.