My new man and I were invited family b.b.q, niece didn't know my new man there, so she didn't dress up or play games with me or him. Next b.b.q few weeks later she turned up dressed up ready play games, flicking hair in front of him, speaking very loud seek my man attention.. my man notice as well, ego step in and he couldn't stop staring at her while I was sitting next to him.. should I weed out pair of them, seem like they both enjoyed playing games.. my ex man now is 45, niece 20.. also niece played same game when I was dating 9 years ago, she was 12 and throwing her self at him.. help she untrustworthy, should I weed her out? Didn't think family members would enjoy hurting another member of family.. appreciate advice thanks