I say good luck to her,she will definitely need it, Contesting a will is not an easy thing to do in the Uk. There must be thousands of Thai women in a similar situation, who's husbands simply just never got round to updating their wills, which is not the sort of thing that rushes to the front of ones mind when one might be enjoying a late life burst of happiness or romance.
Let the courts decide and keep the Thai bashing to yourselves