Replace "$data_email_sender..." in SickLeaveRequest.php with all of the following:
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$data_email_sender =  new FM_FormDataSender(sfm_readfile(dirname(__FILE__)."/templ/SickLeaveRequest_email_subj.txt"),sfm_readfile(dirname(__FILE__)."/templ/SickLeaveRequest_email_body.txt"),'%email%');
$data_email_sender->AddToAddr('Yvette Etteldorf <yetteldorf@eastersealsar.com>');
$formproc_obj->addModule($data_email_sender);

$autoresp =  new FM_AutoResponseSender(sfm_readfile(dirname(__FILE__)."/templ/SickLeaveRequest_email_subj.txt"),sfm_readfile(dirname(__FILE__)."/templ/SickLeaveRequest_email_body.txt"),'%email%');
$autoresp->SetToVariables('staff_first','email');
$formproc_obj->addModule($autoresp);

$autoresp2 =  new FM_AutoResponseSender(sfm_readfile(dirname(__FILE__)."/templ/SickLeaveRequest_email_subj.txt"),sfm_readfile(dirname(__FILE__)."/templ/SickLeaveRequest_email_body.txt"),'%email%');
$autoresp2->SetToVariables('supervisors','email2');
$formproc_obj->addModule($autoresp2);