Here's my two-bits worth about the movie. First, I had to justify to myself even watching it, and I did so by folding laundry and doing some ironing while watching it.
But, after about an hour, I couldn't watch any more of it because I thought that its portrayal of the <modsnip>(and I'm just quoting that exact word from the movie!) murderer missed the mark. Or missed some of it, at least. The actress who played her was okay, but she didn't get across JA's weird immaturity. What I mean is that she played JA as a psycho (which I believe she is) but little more--as if JA's violence was yet another "Fatal Attraction" scenario. I'm struggling to put this in exact words, but for me the actress came off as too mature or too grown up. She didn't capture JA's psycho inner 14-year-old mean girl.
All this is probably unfair, because I didn't watch all of it. I guess I expected too much of a Lifetime movie--silly me!