Kristina says in this episode she is 34 years old, but this implausible for three reasons: First of all, that means she had to give birth to Haddie at 15, being pregnant at 14 (Haddie is 19). Second of all, in episode 21, season 2 "Slipping Away" Kristina tells Haddie she lost her virginity to a guy named Roy when she was 15. And we know from the same episode that Adam and Kristina didn't know each other at the time of their respective high school proms. Third, a woman like Kristina would highly unlikely have a baby before she got married. In episode 7, season 5 "Speaking of Baggage" she tells Amber that she and Adam got married in grad school, after living together for a year. Meaning she had Haddie in her twenties, making in impossible for her to be 34 at the time this episode took place.