Sponsorship for dependents is normally valid from the start date of your contract and expires at the end of your contract, regardless of age. In this case, your daughter should be able to live with you in Dubai until the contract ends, when she will be 19, but you should always check with your Placement Coordinator to confirm the specifics for your country and program. If you were to extend your contract at the end of the two years, your daughter’s age means she would no longer qualify as a dependent and would need to make her own visa arrangements if she were to remain in the country.