P
They may still be able to receive the Mobility component if they can clearly show that there problems pre-date their 65th birthday. This would most likely happen if the notification of change was within three months of her birthday, but there is a lesser chance if it is within a year of it.
It may be a matter that they might have to take to appeal, as Decision Maker's often ignore the exemptions to a rule.
Gordon
Nothing on this board constitutes legal advice - always consult a professional about specific problems