The new contracts just aren't lucrative for models like Josephine. Unlike Angels like Adriana and Alessandra whose contracts were upwards of $1 million, the new contracts are for about $100,000. It's just not worth the commitment and losing out on jobs that pay that much per season or even per shoot, sometimes. I'd imagine that Lais was offered a better deal because she is already established in VS, but girls like Martha are banking on getting their name out there via VS. I strongly believe Josephine would have actually turned down the contract. I'm more concerned that Lily Donaldson hasn't been promoted to an Angel yet - especially now that VS has such a strong UK presence.