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Thank you for your question
My name is Clare
I shall do my best to help you but I need some further information first
Which part of the Uk is involved and what provision has been made for the Wife within the Will?
How long had they been living together?
Who has he left his half to?
What provision was made for her?
Then I have to be blunt - that is insufficient provision after 27 years - half the house would be seen as being hers anyway.
Accordingly if she is willing to settle for costs of improvements this would be a much cheaper settlement - if it went to court she might well be awarded the whole property
Please ask if you need further details
You are most welcome