Trying to be brief
A family member had made a will which removed most family members.
The family member lost capacity and was tricked into changing Thier will to put most of the removed family members back in again.
The LPOA for finance was the same as for health and they deliberately delayed dementia assessment despite knowing that the person was struggling so that they could coerce the will change.
What can be done re this? Little evidence other than the considerable change to persons in the will. The person whose will it is still believes that the will is as they left it.