I have a 5 yo son, and I can tell you that he and about 90%of the other kids in his kindergarten class talk nonstop unless they are actively engaged in either a physical activity (jumping rope, basketball, playing tag) or an activity that they really enjoy, such as arts and crafts, learning about something really cool, etc. They aren't wired to just be quiet at this age. Is this girl in preschool or kindergarten? When you are with her, how much attention does she truly get when competing with children so young that they need help with almost everything? If you need to make a quick phone call, let her know ahead of time that you need to make a quick call and will not be able to listen to both the call and her at the same time, and that she would be helping you a bunch by waiting to tell you things until you are off the phone. Kids this age usually love to feel helpful. Also let her know how long you expect to be on the phone (until the last number on the clock is a five, for example) so that she has a tangible way to understand how long she has to wait, and then let her know that you are happy to talk with her as soon as the call is done. And I agree w/ other posters that your calls should be extremely limited while you are watching someone else's kids -- appointments that can only be made during the hours you are taking care of the kids, a quick discussion with a doctor because it's the only time you can talk to him/her, etc. Even with all of this, expect a five year-old to talk while you are on the phone. I also agree with other posters that you might have taken on too much if a five year-old is driving you nuts just by talking non-stop. Even when my son is -- somewhat quietly -- just sitting and drawing, he often gives me a play-by-play about what he is doing. This girl does not sound unusual to me. Try engaging her as your helper (even though she'll likely slow you down) as much as possible, and let her mom know that her daughter seems to need more social interaction than you can provide while caring for two younger children. Perhaps you'll be able to set up some playdates for her.