If Mary hadn't signed the oath, do you think her father would have had her exucuted?
I've heard various stories from different historians. A documentary by David Starkey claimed that he threatened her friends, but not Mary herself. Another book I read said that he did in fact threaten her life. Or do think she would have been punished in some other way if she didn't submit? He was her father, I guess he could have had her whipped or something.