There has always been a bit of haziness as to where MB entered. But I settled on the SW corner for several evidentiary reasons:
1 LE said she entered under the awning. That's far more indicative of the SW corner, not the main (W) entrance.
2 LE said when she entered (wherever it was) she was seen on cam, and then walked towards perp, and then the cam didn't see her, perhaps shutting off. They hinted she was walking AWAY from the cam, not towards it.
3 LE said that when MB entered, she unknowingly walked towards where perp was, which means perp could be seen on cam more or less.
My map below was an attempt to fit in all of those factors, have the body be in SW, but killing and exit able to be off camera. I accept there can be other thoughts about how to fit all those facts into a scenario, but I haven't seen a different theory that aligns with everything LE said. (Oh, and btw, I originally thought she had entered via main W entrance. But I couldn't find a way to make it fit with all the things LE shared, mentioned above.)