Which makes me wonder, or rather fairly strongly suspect, that she viewed religion as merely something that she had to take into account, rather than actually adhere to, in order to reign. That is, if the Catholics had held the high cards, I suspect Elizabeth would have been a Catholic. I can’t ever see her being a Calvinist, however. I suspect that behind castle walls, she wasn’t all that much of anything.
That may sound cynical, but the same is not true of other English monarchs of the same period. Henry VIII had all sorts of vices, but he really did believe in the Faith, for all his numerous vices. Mary did believe in the Catholic Church. Edward VI really was a Protestant. And so on.