Under the Will she is only entitled to the legacy since she was not divorced from him (divorce would mean her legacy fails). However, as an undivorced spouse, she DOES have a claim under the Inheritance (Provision for Family and Dependants) Act 1975 for "reasonable financial provision otherwise than for her maintenance". IE she is entitled to attempt to claim on the estate and one of the tests that will be applied is the "deemed divorce test" - what she would have received had the marriage ended in divorce rather than death. She has 6 months from the Grant of Probate to make the claim and thereafter can apply to make an application out of time (but needs a good reason). Unless she claims under the Act, she is not entitled to anything more and IF she claims under the Act she has to prove her claim.