God Bless you for speaking up as a single mom. This movie is way beyond just father/child; it is parent/child; or even other family relationships as they exist in today's world. Nice review--from the heart. I'm sure you are a courageous mom. Did you know there are books out connected to this movie? "The Resolution for Men" and "The Resolution for Women". See, even the writers of this great story knew in advance that this was for moms as well as dads. I've glanced at the books but not read through them.
My wife and I did get the Fireproof book, "The Love Dare", and did the work together after that film. Likely the books for this movie will be beneficial, especially for women/men who have children yet under their roof.