I am familiar with the nature of the thread (troll) but I want to reply anyway.
As aforementioned, £100,000 is not as much money as you would think. With the average salary being around £25,000, that money would be enough to last 4 years without work, and she would be living as though she had just an average salary.
Something which I think about none too infrequently lately is how obsessed people are with money. Money is a secondary reinforcer with which people seem to associate happiness. I think it is so over-anticipated, the idea of earning a lot of money leading to inevitable joy and fulfillment, that it takes over people's lives and some people actually miss out on enjoyment as they're busy awaiting future success. It's quite ironic.
If you were to die tomorrow, would you rather die rich or happy? It's a shame how people's goals have changed over the years!
TLDR; She will soon be dead and then you can inherit that money for yourself so just be patient