Hil is in her early to mid 30s so she's old enough to have a teenager. She would've had her pretty young though.
Agreed about the chemistry between Victor and Hilarie. It definitely improved as the movie wore on which made their romance feel more genuine imo. They didn't like each other in the beginning so it made sense that it took them time to see the good in the other. I also liked his interactions with her daughter, that made him an endearing character in the end.