Who Taught You To Be Happy? - S1.E9

Tina's 25th birthday is coming up and she feels lost without Sam, so she moves in with Julie, despite her sister's protestations. However when Tina messes up a catering order, old family tensions erupt and Julie tells Tina she's hopeless and she's sick of having to look after her.

In the heat of the argument the reason for Julie's resentment bursts out - when they were children Julie was forced to stay living with their alcoholic mother Annette because she had to look after Tina.

Tina is so hurt by this that she takes off from her birthday party, only to end up on a deserted road with a flat tyre and no cellphone reception. As she tries to change the tyre, she is badly wounded by the nail that caused the puncture and starts to bleed heavily.

Because Tina suffers from Von Willebrand's disorder, this is serious - she could bleed to death if she doesn't get help. During her struggle to fix the tyre and get out of there, she has flashbacks to the time Annette tried to kill herself.