Leave part of placenta after giving a birt it is a medical malpractice? Now she have to have a surgery because she has a infection.. I need help

I'm sorry to hear that someone close to you is going through this.  Unfortunately, an experience med mal lawyer will need more information to tell if this is a case or not.  The usual course is for you to find an experienced lawyer near you and meet with them.  They will usually either gather the relevant medical records or have you gather them and then review them.  If it looks like there is something there, the records will be sent out to an expert (in this case probably an OB) to see if he or she thinks that the first doctor made a significant mistake.  While I know from my experience that it isn't always negligence to leave some portion of the placenta behind, sometimes it is-- the only way to know for sure is to gather the records and look at the totality of the circumstances. Find a lawyer and speak with them.  There is no reason to wait-- there is a time limit which applies to suits like this, so sooner is better than later.  I hope she recovers completely and I wish you the best of luck with the case.