I am a single mother of two children, ages 13 and 7, girl and boy, respectively. I have a very good relationship with them. What bothers me is that my kids don't seem to get along very well. Each poses a threat to one another when it comes to attention. I could have attributed this to age gap, but there are other factors to consider. I do my best to give them undivided attention. But the "competition" becomes stiff.