Luanne is Marco's friend and Marco trusts her but Robin does not like her brain being poked into. Also the woman seems fragile and Robin's not entirely sure what to do with her. She both wants to protect her and avoid her at the same time and the way Leanne seems to want to comfort her mystifies her somewhat since, aside from the connection with Marco they barely have one. Right now she doesn't have any definite thoughts on Leanne other then that she's painfully innocent and should be treated delicately for now.