That seems a little stiff. I’d bet that when she’s relaxed, just hanging out, she answers with …“mmyallo?”
Somehow, one of the things I simply cannot imagine is Queen Elizabeth “just hanging out.” Maybe back in the days when she was simply Lilybet! 
Here’s one example.
(much giggling at the idea of her making an “STD call”)
I quote that very call in the Staff Report.
“I now declare this conversation … open.”
(Scissors snip sound optional.)
checks forum
OK, I feel comfortable posting this here as not too many people will see it. 
Judging by that clip, Her Maj was pretty good-looking back in the day, particularly when she did that shy smile thing.