I'm sorry I can't help with this. I can say however that I appreciate your frustration and possible anger at your grandmother.
To call her "lying and deceitful" is a bit strong
if Annie wanted it buried she would have done a good job about it.....
My own Mother would not speak about her family except to say that she was orphaned, brought up in a children's home and that she had a brother. We have been lucky in that we have managed to uncover a great deal about Mum's life from her birth to the 2nd WW, and we now know some of the reasons why she didn't want to talk!
I'm sure you're gran had her reasons, don't be too hard on her, remember that their generation saw things very differently to the way we see things today
Good luck with your search.
Suey