Help...

So my daughter I adopted at 3 who is now 7 is constantly attention seeking.

When in groups with other children she constantly comes over tell taleing or crying,

She is the clown infront of everyone i,e. Jumping up and down flashing her bum the list goes on... this worries me why is she like this is it my fault?

She was parted from her birth mum @ 3 her mother has no interest in her she has regular contact with her but not often.

Can anyone help or advice is this normal behaviour just how some kids can be or is it something to be worried about?