LO is in preschool and her cousin is in her class. They play well together when she comes over, but from what I see at school it's a different story. She ignores LO when she is talking to her, if she comes up with a game to play she acts like my LO isn't there, if my LO is telling her something she just walks away. I know these kids are only 4, but it still breaks my heart. She just loves her cousin, says she's her best friend etc but her cousin doesn't give her the time of day.

What would you do in this situation?