Someone who isn't afraid of murdering someone else's child.
I don't mean that in a snarky tone, either. I'm just guessing that if this wasnt planned, she was likely panicking, and perhaps the fear of being caught and needing to preserve her "Innocence" far outweighed any fear of being pulled over if driving her own vehicle.
Despite those thoughts, I'm not convinced either way, that she acted alone or had help. I'm torn.
Does anyone here know someone they could call and depend on for something like that? Perhaps some have close enough bonds with friends or family in order to get someone to lie for them or give a fake alibi but to involve themself in a situation they were not involved in and to transport and/or dispose of a dead body?!
But, going along with that idea, that's (ironically enough) the exact same reason why I also keep my mind open to her not acting alone. If another party or parties were involved in something leading up to the incident, they may also feel very inclined to preserve their freedom and go along with helping to cover the crime, because they are, either directly or indirectly involved as well.
This is when I think back to her friends, or seemingly lack thereof and wondering if it's due to her having no friends (likely acted alone) or having the type of friends who definitely do not want the spotlight or at least LE, on them. (Likely another involved)