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In the show, she is either 16 or 17, because she is in 12th grade with derek, but derek was left behind one year. so yeah. :P
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∙ 15y ago
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On Life with Derek who is Derek's stepsister?
it's Casey
In life with Derek how old is Derek casey Lizzie Edwin and marti?
Derek- 16 Casey- 16 Lizzie- 13 Edwin- 13 Marti- 8
How are Derek and casey related on the life with Derek?
Derek and Casey on Life with Derek are step siblings. Casey and Emily are Nora's kids, and Derek, Edwin, and Martie are George's kids.
Life with Derek how are Derek and casey related?
Duhhhh. Casey and Derek are stepsiblings. Casey's mom married Derek's dad.
How old is casey on life with Derek?
born in Toronto, c. 1991
Who is Ashley leggat?
she is casey from life with derek
Is Casey from Life With Derek pregnant?
no she is not pregnant
Ow are Derek and Casey related on Life with Derek?
Step Brother And Stepsister
On Life with Derek has Casey and Derek kissed?
Well her name was not Casey but in one of the episodes the carecther who plays Casey dressed up as her cousin and at the end of the episode Derek and the cousin were sitting at a table making out.
What is Casey's sisters name in life with derek?
Cassie
How old is Ashley leggat in life with Derek?
Ashley Leggat plays Casey McDonald on the show, Life with Derek. She was born on September 26, 1986. Her character was 15 when the show started.
Are the actors that play Derek and Casey on Disney channel's life with derek dating?
no there not together
