F,Karen Mallet ?born6-24-1964?Athol MA.looking for family,siblings

Hello, I was told I was born Karen Mallet, 6-24-1964., in Athol,MA...and that my mother Althea Deveneau, bd 3-27-1946 married my bf Donald Mallet, bd unknown...was told they were married 6-16-1964.....they had me 6-24-1964...and shortly after that had marriage annulled...or divorced?...I was told I was born premature....due date was 9-28-1964..... 2 years later on my birthday my mom remarried a man in MI and he adopted me....my name changed to Karon Wilson.... I was told I have at least 3 other siblings, I lived with for awhile, assuming they were my father Donald Mallet's kids....from pre- vious marriage... Reasons also to believe my mom's marriage to Donald Mallet may have been prearranged just to give me a name... also reasons to believe I may be a twin....I was only 2lbs60z at birth....... any way's long story short......much info left out of this thread but the pieces to the puzzle don't add up at all with all the things I've heard thru the years......I've been searching online for 7 years.....and can't find no family history at all....not even under my mothers maiden name...or her parents.....ectra If anyone can help me at all I would really appreciate it, I live in MI....my only hope for answers right now are online, My mother Died June 6, 2004...