missing person

my mother is missing. now, im not sure if she wants to be found or not, so im not sure to go about finding her. my family has already tried filing a police report and nothing has turned up. the rest of my family has given up because they know she doesnt want to be found, but i do not want to give up. so please, if anyone knows of any of those companies that find long lost relatives and what not...please let me know. and im not talking about some hoax from the net, i mean a really good company that can find her. so please let me know if you know of any. thanks