Something beyond dreadful happened to that girl. I can't help thinking she got caught up with people who had more money than she did, lived a more affluent/glamorous life and when she tried to get away she 'knew too much' and was killed. I could see a young mom wanting to cut ties with any kind of toxic elements just before getting custody rights back.
I am not suggesting Jessica was directly involved in a life of crime, but it gives me pause knowing she was at one point denied unescorted custody. Knowing a little bit about child protection from a previous career, and find this odd.
No doubt CPS is well aware of any influences in this young woman's life, and they will unravel this.