McDonalds in New Rochelle, NY

This Nanny Sighting Happened today, 4/22 at the McDonalds in New Rochelle, NY. I was sitting at a table waiting for a friend an a large African nanny walked in with two boys, who were probably twins. They seemed same age, dressed the same. They were not biological and one of the boys was named Jackson. The nanny ordered food and sat down. She caught my attention because she was so rough with the boys. She was so large that when she walked, she snorted. She tore into the bag, right away, stuffing a fistful of fries in her mouth. Big mistake for Jackson. He reached for a fry and she brought her massive hand down on his and smacked it down.  She said something like, "no grabbing, what you think this is?"
The other boy asked for some French fries. She gave him some on a napkin and said, "yes, you may, because you asked and you did not grab".
Jackson sat there watching his brother (?) and nanny (?) eat fries. The nanny takes out chicken nuggets and a burger. Shoves a nugget in her mouth and smashes the burger down. She asks the other boy, "would you like a chicken nugget"
He says, "yes, please"
Jackson said, "I too, please would want a chicken nugget"
She says, "I'll ask you when it's time".
Now she sees me looking at her. She looks away from me and then talks sweetly to both kids, "One of the things your parents want you to learn is manners and it's my job to teach you".
Then she jams 1/4 of the burger in her face, follows it up with a drink of what looked like a soda and a long slurp of shake.  I mention the food etiquette, because this person was so repulsive, she shouldn't be schooling people on manners. Everything about her was unmannerly. Now, it's ten minutes and Jackson still doesn't have anything in front of him. Finally, the nanny says, "Jackson, are you ready for some French fries"
Jackson says, "yes, please" and she dispenses 4 or five fries to his napkin.
Meanwhile, she's got the chicken nuggets, burger, shake and other drink in front of her.

I'm a mother and here are my problems. I take my children to McDonalds, in a pinch. Even the "good" child was only allotted a miniscule amount of an XL fries. What is going on here? If the nanny wants to indulge her eating habits, I don't think it should be at the children's expense. I hope you don't think it was not a big deal to be so deliberatelycruel to a child. These boys were probably three years old. Jackson had on a brown hat with a bright yellow dump truck on it. The other twin had a NY Mets baseball cap. Both boys were white with sandy hair. The nanny wore a pink ribbed shirt and had on a gold headband that fairly prominent. I hope this gives you enough information to look in to the way your nanny (?) treats your children.