Sim Sleuths: A Recipe for Murder (Mystery Game)

The Re-enactment:
Armed with the rough timeline of the night of the murder, you decide to take the Goths and Lily back to Chez Llama to re-enact their movements that night.
They all take the same places they were in before, and move around as they claimed to that night as you time them.
Everyone's movements line up with the time line perfectly...apart from one person.
During the re-enactment Cassandra Goth returns to the table six minutes after she left. Yet, according to the original time line, she returned to the table after eight minutes.
What was she doing during those two unaccounted for minutes?

Mystery Solved:
Who: Cassandra Goth has confessed to the premeditated murder of Victor Goth.

Why: Cassandra states that she became aware of her Mother's affair with Victor Goth a while ago when she came home early from school one day and spied on them. She was not surprised by her Mother's behaviour, as she had been known to flirt.
Cassandra also suggests that her Mother's disappearance involved her running away with another man.
She did not care what her Mother got up to, but found it deeply unfair to her Father. She thought that by removing Victor from her Mother's life, her parents could be closer.

How: Cassandra had found a recipe for Pufferfish Nigiri and had been holding onto it until just the right moment. When she found out they would be going to dinner with the Fengs she quickly made a (poor) Pufferfish Nigiri and hid it in her bag.
At Chez Llama Victor ordered the Pufferfish Nigiri as she thought he would, and she waited patiently for the perfect opportunity.
When she came back from the restroom she saw that Salim was distracted by Bella. She knew that the Pufferfish Nigiri should be prepared by now and she snuck into the kitchen and switched the dishes. Lilliana was very busy and did not notice her.
When Bella ran out of the restaurant after Victor's death, Cassandra followed her and this is when she disposed of the excellent Pufferfish Nigiri.

Cassandra Goth
Currently carrying out a prison sentence for the murder of Victor Feng. She and her Father write to eachother regularly, he has forgiven her.

Bella Goth
Disappeared again. Rumour has it that she is living with another man in Sulani.

Mortimer Goth
Has sold his family's San Myshuno home and now dedicates all of his time to search for Bella.

Alexander Goth
Now attends a boarding school where he is part of an excellent music program, he is doing very well and hopes to become a famous pianist.

Geoffrey and Nancy Landgraab
Nothing much has changed for the Landgraabs. Geoffrey is still currently running San Myshuno with Nancy by his side.

Lily Feng
Despite their marital problems, she realised that Victor's political career and causes could have greatly benefited San Myshuno. She quit her job as a CEO and has decided to run against Geoffrey Landgraab. She plans to reinstate the Simoleons for Everyone cause.

Lilliana Kealoha
Quit her job at Chez Llama and opened her own restaurant in Newcrest. Pufferfish Nigiri is not on the menu.

Salim Benali
Wrote a best selling mystery novel inspired by the murder which earned him enough money to quit his waiter job.
When he is not writing he assists Lily with her political campaign and teaches a Creative Writing course at Britechester.