Babysitter

Ok moms...my daughter has been going to the sitter for about a week (3 days last week, 3 this week) The other day she tells me how much her 10 year old son loves my daughter and that he carries her around. Yesterday when I came to pick her up, her neighbor was over and had apparently fed my daughter and was cuddling her. Should this bother me?! I m afraid her son will drop my daughter and why is this person I don't know and am not paying cuddling my daughter?