Local maid is so picky, will reject those job for the mom who stay in, and the family with 2 kids or more. Overseas maid is almost the same. They come here for travelling. If they resign, no need to pay the agent fee as they will sue the agent from the Phi Immigration.
It's really depend on your luck. But heard many friends that it's hard to find a maid recently. As phi maid have lot of choices like Taiwan that working in Mfg (9-6pm) with higher wages or mainland China. For Indo maid is less supply in HK and easy to get a new employer even they break the contract.