Meipang,don't forget to name and shame your former 'school' in the 'School and Recruiters Section' of the board once you've managed to resolve your 'release letter' issue.Board readers will then be able to make an informed decision whether to apply for a post there or whether to accept a job offer from there.
I reckon the Filipino lady has decided to remain there because it's hard for Filipinos to get teaching jobs in China.