While Treena is the daughter of Mr. Lahey and Barbra Lahey, Treena did not reside inside the Sunnyvale Trailer Park, but instead somewhere else and would come each year to visit Lahey during the summer. ("I've Met Cats And Dogs Smarter Than Cory And Trevor")
After Treena's father had let the park go to hell and the barely won the Trailer Park Supervisor election, Barb Lahey decided to allow Treena to stay with Lahey and Randy. This was done in the hopes that Lahey may be able to get himself together. ("I've Met Cats And Dogs Smarter Than Cory And Trevor")
Treena spent the first few hours of her visit spending time with Lahey and Randy, as well as riding her bike around the park and meeting up with Ricky, Julian and Bubbles. Treena also attended Randy's birthday party and went on an errand for Ricky, buying him chicken chips and pepperoni after he had fixed her bike. This had to be done in secret, because Lahey had specifically ordered Treena to stay away from Ricky and Julian, particularly Ricky. ("I've Met Cats And Dogs Smarter Than Cory And Trevor")
She is seen one last time in The Bare Pimp Project (Episode) where she runs off with Ricky and Julian's hash and again before the credits locking the hash in a safe with Bubbles help so they can live in much wealth when they come out. When Ricky and Julian return in Season 3, Treena is never seen again nor referred to.
Treena first met Ricky during one of her annual summer visits to the Sunnyvale Trailer Park, and despite her father's orders for her to stay away, the two became fast friends. (TPB: S2E03, S2E06) During their interactions, Treena would often buy Ricky peperoni, and once brought him a shirt as she felt bad for him upon hearing he needed a shirt. (TPB: S2E03, S2E06) Treena was also very encouraging of Ricky, wishing to bid him good luck for his grade 10 classes as well as reminding him that he was smarter then he gave himself credit for. (TPB: S2E04, S2E06) Treena also looked up to Ricky, seeking comfort that she was not getting from her father and was hurt when Ricky informed her (albeit being under pressure from Julian) that she could not hang around while Freedom 35 was still in operation. (TPB: S2E03, S2E04, S2E06)
While Treena seemed to seek out Ricky more then anyone else, she had become acquainted with other residents of Sunnyvale, including J-Roc. By the time the destruction of Bubbles' shed, J-Roc had taken to calling Treena "T" and would ask how shes doing. (TPB: S2E05)
- Trailer Park Boys Season 2
- While Treena's last name was never explicitly stated, the fact that both Jim and Barb's last name is "Lahey" means that her last name is Lahey as well.
- Treena also appeared in season one, but her scenes were deleted, likely making them non-canonical as they would conflict with her later appearances anyway (such as "I've Met Cats And Dogs Smarter Than Cory And Trevor" making it clear she does not know who Julian and Ricky are).
- Treena does not appear outside of season 2 of the Trailer Park Boys, including the Trailer Park Boys Christmas Special "Dear Santa Claus, Go Fuck Yourself" (not counting deleted scenes in season one) for reasons unexplained. She is mentioned by Jim while he proposes to Barb in Propane, Propane (S4E7). This is likely a retcon, or a lack of availability (or perhaps interest) on the actress, Ellen Page's part. It should be noted that other children characters, such as Randy and Lucy's baby have met a similar point (despite that character also being a significant plot point).