Be glad she likes to spend time with you. Even though obrez is a glowie, I agree with his advice. Make it clear that you enjoy spending time with her, but structure your day so that she knows you have to concentrate on work mostly, and there are specific periods where you take a break. Make it clear that you enjoy spending time with her on those breaks, but not when you’re working. “Babe, I’ve got to concentrate, let’s hang out when I’m done with this piece in about an hour, I’ll need a breather [and I look forward to my breaks with you].”