Do yall think the walmart oven girl was accidental or planned?

If u don't know yet there's this girl who works at Walmart got cooked alive in a walk-in oven while cleaning it but recently ppl are saying its definitely not on accident because she can't possibly lock herself up when you need a certain pressure to close the door or that she would clean the oven while it's still on. People also say the fact she's Indian too it must have been a hate crime since racism exist. What are yall thoughts?