Jill came to the clinic because she kept gaining weight even though she was exercising a lot. She was seen by Gregory House, who figured out the issue immediately. He grabbed the ultrasound machine and told Jill she had a parasite. However, he reassured her that many people came to love their parasite, even giving it a name and scheduling playdates for it. He then showed her the fetus on the ultrasound and revealed she was pregnant.
However, Jill had two problems. She had been on contraception, a one injection hormone treatment. However, Dr. House reminded her that she would have been told it took time to take effect. Secondly, she revealed that she had slept with her old boyfriend at about the time she got pregnant (the sexual intercourse was supposedly unprotected). House asked if the boyfriend resembled the husband. When she said he did, House recommended keeping the baby.
However, Jill returned to the clinic with her husband Charlie and buttonholed Dr. House. She said she was there to get their test for mononucleosis, but House realized she was there so they could do a paternity test without her husband's knowledge. House went along with it.
Luckily, the baby turned out to be Charlie's, being conceived before having sex with her ex that night. Jill thanked House and wondered if he could help deliver the baby. At first House went to decline, but then he realized that if he agreed, he would be entitled to hang out in the lounge reserved for obstetricians. He went to the lounge and when Dr. Lim and Dr. Kubisak tried to throw him out again, he told them he had a patient.
- Hedy Burress who plays Jill is best known for playing Yuna in the RPG game, "Final Fantasy X" and its sequel, "Final Fantasy X-2".