Rebecca Thomas, a dancer from Sutton Coldfield, is stranded on the cruise ship the Costa Allegra in the Indian Ocean after it lost power.
Her brother James Thomas, who is also a dancer, escaped from the Costa Concordia which sank in Italy last month.
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She has been jailed for four years with police calling it "a bizarre, shocking case"
She was a student at the University of Lincoln and on the hockey team.
Raisins, sultanas and currants can cause kidney failure in dogs, so pet owners must keep them out of reach.