She said: "First of all, we've never seen Harry this relaxed with anybody".
For a moment, Prince Harry takes a second and whisper something in girl's ear.
An innocent two-year-old girl sitting on her mother's lap couldn't resist the temptation and dared to put her hands into a tub of popcorn held by her neighbor - an unsuspecting prince Harry.
Daily Mail notes that if the couple becomes engaged and Markle stays in Toronto, her security would be taken over by the Royal Canadian Mounted Police. The queen says, "Oh really?"
Harry is no stranger to children, as he is the godfather to six of his friends' children and believes he does a good job with them.
Sharing plenty of laughs, the jolly pair were joined by former Vice President Joe Biden, and his wife, Jill. But, it is Harry and another, rather different little lady that has got us all swooning for the Prince now.
What do you think Obama and Prince Harry were laughing about?
Prince Harry and Prince William both made visits to the White House during the Obama administration.
Emily is the daughter of the prince's friend and former Invictus competitor and Paralympian David Henson, reported The Telegraph.