Starting to see signs of ex's personality in dd and I don't like it

[17leftfeet]

We split when she was 9, she's now 13

She sees him once a fortnight and doesn't particularly get on with him

He was EA towards me and her, was self entitled, selfish and didn't care about other people's feelings and I'm starting to see the same behaviours in her and I've no idea if its normal teen behaviour or something worse

She's fine at school in fact they couldn't speak more highly about her but she can be very rude to family and the way she responded to her stocking presents yesterday? I ended up taking them off her

After she had calmed down for 15 minutes in her room she was fine and we had a nice rest of the day but I keep getting these flashes from her and I honestly don't know if its just me over reacting

Help?

I get this completely.

DD is 12 and it terrifies me how much like her father she is. So much so that she decided to live with him earlier this year.

I'm not sure there is anything you can do, OP. Try to focus on her good traits, rather than the ones which remind you of her wanker father.
And obviously punish her as you normally would for the things which you find unacceptable (rudeness etc).

She's 13 - probably a lot of what you are seeing is average teen behaviour - manage it as behaviour rather than 'Character'

I think it's just a difficult age for some, it'll pass