 Shelby Corcoran ( Idina Menzel ) — Rachel 's biological mother , the adoptive mother of Quinn ( Dianna Agron ) and Puck 's daughter Beth , and the former coach of rival glee club Vocal Adrenaline — is headhunted to coach a second glee club at McKinley High financed by Sugar Motta 's ( Vanessa Lengies ) wealthy and doting father . Shelby reaches out to Rachel , Puck and Quinn . She lets Puck see Beth , but rejects Quinn 's desire to do likewise due to Quinn 's bad @-@ girl attitude , appearance and behavior . Cheerleading coach Sue Sylvester ( Jane Lynch ) , who is running for Congress , convinces Quinn to feature in an anti @-@ arts video for her campaign . In it , Quinn confronts Will and blames him for her transformation into a bad girl , but Will reprimands her , reminds her of how the glee club and its members have always supported her in the past and tells her to grow up . After seeing a picture of a happy Beth and Puck , Quinn breaks down . She resumes her normal appearance , and Will and the New Directions welcome her back into the club . Puck tells Quinn he is proud of her , but Quinn reveals she is only pretending to behave in order to take Beth back from Shelby , and intends to pursue full custody . 
 Shelby Corcoran ( Idina Menzel ) — Rachel <a href='null_genetive' title='1'><mark>'s</mark></a>biological mother , the adoptive mother of Quinn ( Dianna Agron ) and Puck <a href='null_genetive' title='2'><mark>'s</mark></a>daughter Beth , and the former coach of rival glee club Vocal Adrenaline — is headhunted to coach a second glee club at McKinley High financed by Sugar Motta <a href='null_genetive' title='3'><mark>'s</mark></a>( Vanessa Lengies ) wealthy and doting father . Shelby <a href='uninflect' title='4'><mark>reaches</mark></a> out to Rachel , Puck and Quinn . She <a href='uninflect' title='5'><mark>lets</mark></a> Puck see Beth , but <a href='uninflect' title='6'><mark>rejects</mark></a> Quinn <a href='null_genetive' title='7'><mark>'s</mark></a>desire to do likewise due to Quinn <a href='null_genetive' title='8'><mark>'s</mark></a>bad @-@ girl attitude , appearance and behavior . Cheerleading coach Sue Sylvester ( Jane Lynch ) , <a href='null_relcl' title='9'><mark>who</mark></a>is running for Congress , <a href='uninflect' title='10'><mark>convinces</mark></a> Quinn to feature in an anti @-@ arts video for her campaign . In it , Quinn confronts Will and <a href='uninflect' title='11'><mark>blames</mark></a> him for her transformation into a bad girl , but Will <a href='uninflect' title='12'><mark>reprimands</mark></a> her , <a href='uninflect' title='13'><mark>reminds</mark></a> her of how the glee club and its members <a href='been_done' title='14'><mark>have</mark></a> always supported her in the past and <a href='uninflect' title='15'><mark>tells</mark></a> her to grow up . After seeing a picture of a happy Beth and Puck , Quinn <a href='uninflect' title='16'><mark>breaks</mark></a> down . She <a href='uninflect' title='17'><mark>resumes</mark></a> her normal appearance , and Will and the New Directions welcome her back into the club . Puck <a href='uninflect' title='18'><mark>tells</mark></a> Quinn he is proud of her , but Quinn <a href='uninflect' title='19'><mark>reveals</mark></a> she is only pretending to behave in order to take Beth back from Shelby , and <a href='uninflect' title='20'><mark>intends</mark></a> to pursue full custody . 
Shelby Corcoran ( Idina Menzel ) — Rachel  biological mother , the adoptive mother of Quinn ( Dianna Agron ) and Puck  daughter Beth , and da former coach of rival glee club Vocal Adrenaline — is headhunted to coach a second glee club at McKinley High financed by Sugar Motta  ( Vanessa Lengies ) wealthy and doting father . Shelby reach outt to Rachel , Puck and Quinn . She let Puck see Beth , but reject Quinn  desire to do likewise due to Quinn  badd @-@ gurl attitude , appearance and behavior . Cheerleading coach Sue Sylvester ( Jane Lynch ) , is runnin for Congress , convince Quinn to feature in an anti @-@ arts video for her campaign . In it , Quinn confronts Will and blame em for her transformation into a bad girl , but gon reprimand her , remind her of how tdaglee club and its members done always supported her in thdaast and tell her to grow up . After seeing a picture of a happy Beth and Puck , Quinn break down . She resume her normal appearance , and Wgonand thedaw Directions welcome her back into the dab . Puck tell Quinn he is proud of her , but Quinn reveal she is only pretending to behave in order to take Beth back from Shelby , and intend to pursue full custody .