They went overboard giving Elizabeth no emotions over her missing daughter being found. Making her so into her campaign over such a life-changing event was supposed to (I assume) make us choose Lucy over her, but it really rang false for me. I find it hard to believe that anyone would give her political advice to publicly abandon her daughter. I mean, come on, we all know politicians. Not to mention, SPOILERS HERE an opponent can find her, but the DA (Elizabeth) can't? The movie goes out of its way to make Elizabeth a certain way so that it makes Lucy's actions seem "right." If you're a person that believes two wrongs don't make a right, then you will have to suspend some disbelief.
Also imagine a politician's (a DA at that!) child talking to the police without counsel....and she's made to deal with it alone. So the politician abandons both of her daughters. It's also amusing that the opponent doesn't assume that it's a honeypot that the child of her opponent is approaching her. No background checks from either side. A dna test doesn't reveal someone's intentions. This movie asks a lot of the viewer. I know some will disagree, but I don't hate the old Hollywood rule of the villain being punished for their crimes. That rule saved a lot of movies in my opinion. The ending here is unsatisfying and a "The Bad Seed" sort of resolution was needed. Extortion and falsifying evidence are crimes, so if they were going to get Terri (other daughter) for them, how is Lucy getting away with it? Not to mention that by the end of this, Elizabeth has no reason to believe Lucy will stay away. I think this movie going with "politicians lie and are slimy" is not something any of us need to be reminded of.
The kidnapping "mother" is a hero to Lucy and we're supposed to nod our heads in agreement. But that ultimately gets Lucy abandoned by her real family...so maybe she did get the old Hollywood ending...albeit with her debt paid off through extortion. The other daughter has to go through being framed because Elizabeth let Lucy go....somehow their relationship is fine at the end. I mean, I watched it through to the end, but I doubt I need a repeat viewing.
As an aside, I wish Lifetime or whatever production company would put more thought into the titles of these films. Neither Elizabeth nor Lucy truly interact as if "separated at birth," in any emotional sense.