I'm currently visiting my extended family abroad and have been staying in their house for over two months, and I'm worried about my 12 year old cousin's behaviour, she is extremely clingy towards my aunt and is still trying to act like a baby. I'm trying my best to not say anything as I don't feel it is my place but I just want to know if it's normal behaviour? She is constantly trying to hug her and kiss her Mum, she also sulks if she is not the centre of attention, she actually started crying the other day because her Mum was speaking to her son, she also still tries to talk in a baby voice and is also saying things like 'look how cute and small I am' she doesn't really seem to understand boundaries and because of that my aunt's relationship with her son is lacking because he never gets to spend time with her alone and he did speak to me about it and he seemed pretty frustrated. I don't really know what to say, I don't really want to encourage this type of behaviour because personally I think it's pretty horrible! My aunt has said she's tired of this behaviour but she's happy to put up with it because she reckons when she becomes a teenager it will all change, but shouldn't it have changed a long time ago? I'm only 20 and don't have kids or younger siblings so I'm pretty clueless so I may be wrong and this could be normal but if anyone has any advice I would be happy to hear it!