Me and my partner (who has a young child who lives with mum) have had a few 'issues' over the years when SC has told mum 'things' after spending time with us, things that aren't true or have been blown out of proportion. I've begun to notice with SC that they can become very melodramatic over little things (which I have always put down to being a little excited when in company of visitors etc, kids can tend to try show off a little bit) but just recently I've witnessed a 'change' in SC when with us and when with mum, for example when we have had a fun busy day with SC yet upon taking SC home, in front of us, to mum have put head down and dragged their heels into the house and made out they have been tired and unwell all day but being in front of TV all day had taken their mind off it so they did not see the point in saying anything to us - when clearly this has not been the case.
How concerned should I be that SC is doing this?