Sue I hope by now that you have found your mother, if not, write down what other information you have on your family. What states, counties, etc.A time frame.Any names of aunts, uncles, etc. Who raised you?How or if they were connected.
Put whatever info. you feel comfortably about online in an enquiry.You stand a much better chance of finding folks when you list dates, places, and names, including nicknames, etc.