Thank you for your question
My name is Clare
I shall do my best to help you but I need some further information first
Does your sister own a house?
Are you sure that she is telling the truth at this stage?
What your sister has done is a Criminal Offence and can be reported to the Police as such.
It is possible that if she has not actually spent the money the threat of a Police investigation will be enough to get her to give you the money - which may well be being held by
the solicitor who dealt with the Estate.
If she has spent it then you can sue her for the return of the money - although the offer that she has already made of £100 a week may well be the best available one anyway
IN addition you MAY have a potential claim against the solicitor who dealt with the Estate if he or she did not ensure that the money was safely invested.
Such a claim is not a certainty - but it is a real possibility.
Please ask if you need further details
You will have to have gone through the Police route before there is any chance of such a claim
You will also have to have sued your sister
At that point you may find a firm willing to to look at a no win no fee deal
Which solicitor told you that?
Have they confirmed that they have seen the account statement?