possible) to get a valid copy and examine it in detail. And the first thing I thought when I was rereading your story, is that was the Will competently written, that is, the Will could be thrown out, it's rather unusual (IMHO) that only one non-immediate family member (2nd wife of father) would solely get 100% of the proceeds.
Sounds rather farfetched and very biased. And who were the witnesses that signed it/the Will? I can't believe that the Dad would just leave everything to a 2nd wife and not leave anything for the kids from the original wife, I mean, yeah, I can understand some of it (wanting to give 2nd wife something, but not all of it). Sounds fishy IMHO.
If anything, perhaps get a valid copy of the will, and go to a competent lawyer and see what they say, it might be worth it. Of course, don't say anything to crooked 2nd wife of father, otherwise she'll get up to no good and perhaps do more damage. You didn't say anything really about the relationship between you and your father. I assume that if you're there for holidays and such, that you're on pretty good terms.
When my Mom died, her will was a mess and it was thrown out (that's what our lawyer said would happen). And we, as the four kids worked out everything fine, and my sister was an excellent executor. If anything, you should have the lawyer (if your father passes) go to court and declare you as the independent executor and freeze all of the assets of your father, until things get sorted out. Just IMHO.
I went through this process (processing a will) but it wasn't a hateful 2nd wife that I had to deal w/, it was a mother who had dementia (bless her heart) pretty badly and an alcoholic brother and alcoholic sister who gave her bad advice. Thank god I had one sister (and I) who were 'normal', down to earth (and an attorney who saw how woeful the rewritten will was (and the Judge too, later in court)).
Good luck to you all in dealing w/ this difficult situation.
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