It was ok I guess. For its money - decent movie
It was interesting premise. But the moment Son arrived and Alicia house - it was understandable what happened.
(Spoilers)
They should've shown the son meeting the mother at the end instead of fading to black. It's a common mistake newer movies are making in the age of 24/7 content where you end a movie as soon as possible so the audience can go on to the next movie. As a result it doesn't stay with you.