My daughter rules my house

I have been free in a sense from my narcissistic husband for just over a year but can’t put the ‘no contact’ in place as I have children and he’s taken me to court.  He’s still doing his best to manipulate and control every situation but the problem I have is the 14 year old, she has exactly the same narcissistic traits and I am finding she is bringing me down like he did and doing the exact same like he did.  She will say she never said stuff when I know she did (which he did to make me doubt myself) when she goes off on one I can’t reason with her as she is right and I am to blame.  She always throws in that she will just go and live with her dad, which isn’t feasible but I’m at a loss she rules my house and me really.  People say I’m too soft but they don’t understand what a narcissist is and that she is becoming one 😞