I am a real estate broker and a Private Detective. If you still need to locate this person you can reach me through email at; Steve@KeyInvestigations.info. I accept international payments through PayPal.
If she purchased or sold any property in Southern Ca., I can discover that for you. I have a title services company. Having all the records for 16 counties in So. Ca. and checking the assessor's office as well.....see http://www.sopactitle.com.
You may wish to ask your question again and attach a link or give an address so that your question may be answered accordingly--in the meantime have you tried locating this person(s) through any social media vehicle, such as Facebook, Twitter, etc.