From what I've read, her previous employers would have paid for her ticket back to the Philippines as it is a requirement for the termination or end of contract. However, she is only entitled to seven days leave after one year of service. You do not owe her the holidays owed by her previous employer - if they were not taken, she would or should have received holiday pay from them for those. You are also not obligated to pay for her airtickets to the Philippines for her leave, only at the end of the contract as mentioned above.