It may well be bad advice made worse by using what appears to be a complex scheme to limit tax liability. Not a good move by her whilst being part of a government with integrity high on it's agenda. The ethics inquiry could be completed within days, but there's no doubt her reputation is damaged and her future hanging in the balance.This may well be so, but if the shoe was on the other foot (ie a Tory), this board would be screaming blue murder.
FWIW I too think it is an oversight, though I also feel that the advice given to her as an MP of putting the family home in a trust for her kid, is just asking for trouble. She should have seen it coming, even though it is perfectly legal.