Cindi,

I'd look for a local business in your neighborhood that is run by a Chinese family and then work on your relationship with them. Then indicate you are looking for a language tutor or Chinese babysitter. They will then help you find one. (You will then owe them a favor. ) The best immersion will be a daily babysitter with kids who speak only the target language. Failing that, traditional Chinese school with occasional immersion is your next bet.

Good luck!!