The timeline of this and a bit more explanation is as follows:
My friends parents married, and we presume bought their house (with a mortgage). They then had my friend about 3 years later. Her Father died 3 years later (from suicide). She has been told that there was no money and that her grandparents had to help her mum with money to keep the house (this doesn't sound right to her if there was supposedly £70000 declared for probate). About 2 years later, her paternal grandfather died (second example of probate record). She has been told (from various sources, but not her mum) that she was the main beneficiary, and that the money was put in trust for her. Her grandfather was very elderly, and owned his own home, without mortgage and we don't think there would be many, if any debts. Therefore, in theory, somewhere there should be circa £115000 which may exist for my friend.
However, her mum told her that her grandad's friend's family got all the money because they "fiddled it". She did not mention my friend being a beneficiary at all. Her mum cannot or will not give her any further details, and due to other circumstances, my friend is now estranged from her mum.
My friend lives in the same (small) town where all this happened, and her mother uses the only law firm in the town (as almost everybody else in the town does too), so using any legacy to find her seems a bit odd.
We have ordered a copy of the Grandfather's will, and she's going to see if she can search local newspaper records for any inquest regarding her father's death. Sadly, she has very few memories of her dad/grandad, and her mum doesn't appear to have kept any photographs. She has been aware of this situation for a while, but due to the fallout with her mum, didn't feel strong enough to look into it.