2. Parallel universe: Eastenders could introduce a parallel universe where Danielle survived the car accident that killed her. This would create a new set of storylines and character interactions.
3. Secret twin: It could be revealed that Danielle had a secret twin sister who was separated at birth. This twin could step in and take on Danielle's identity.
4. Ghost or hallucination: Danielle could return as a ghost or hallucination to haunt the characters who were involved in her death.
5. Flashbacks or dream sequences: Eastenders could use flashbacks or dream sequences to revisit moments from Danielle's life and explore her relationships with the other characters.
Ultimately, the manner in which Danielle is brought back would depend on the creative direction of the soap and the impact they wish to make on the storyline.