Dating a single mother...?

Its already been said but dont opt for confrontation. Offer some advice but make it clear thats all it is and dont sound like the childs patterns are a bother to you. The mother is in control here but as you to seem serious Im positive that she would not be hostile to any suggestion. Your question was are you in the wrong. Absolutely not. Just dont let it seem like an inconvenience to you. As you get along great with the child Im sure she'd respect what you have to say.