I don't feel this was a planned act to harm her child. meaning (murder/suicide) The tire tracks show she tried to get the vehicle unstuck. I wonder if the rear hatch is open because in the confusion and panic she forgot which way the van was facing . Just such a tragic end.
I'vd been studying this photos:
1) She drives down from the road to the shore
2) She drives in an almost perfect circle
3) She drives around 1 more time and pulls forward after a almost half circle and tries to go up the beach
4) she gets stuck with the back tires on the third time and can't get out. (where the deeper tracks are) and is stuck there
To do donuts or circles she must have been trying to have fun and got stuck.
But at that time, with her being able to drive in circles, the tide was low and she was hardly in the water..maybe a little bit. Like she was letting off steam from all of her feelings.
If she was drunk, trying to have fun, she may have just said 'we're stuck' and didn't want to go for help because she had been drinking.
Decided to stay there. Where she is at shows the natural tide lines. So if she decided to stay there, then those are the natural tide lines that she wasn't thinking about I guess...
I can't help but wonder if the back was opened to grab the overnight bag.
**I'm looking again at the photos and it looks like she did get out of the deeper areas..it shoes tire lines from there. So I have no idea.