Just my opinion: Perhaps the homeowner is a classmate or coworker (even former). We do not know if ML was into drugs and I don’t mean hard core I mean recreational and pills. She is down bc of grandma and knows where she can score. Maybe she wasn’t planning on this but received a message from the homeowner saying he was sorry for her loss which is what made her think she wants to get something to boost her spirits.
ML & homeowners text and plan to meet. Perhaps it is ML‘s idea to meet at the park because she doesn’t want to go to his house. She arrives at the park, they do a first round and decide to go to his house. From there, something gets out of control. He makes advances towards her and she turns him down and says it’s not like that. Knowing of her alternative lifestyle he gets upset “so you will be with an old SD but not me” ... Forces himself on her, hence mattress is sold days later, and things spiral resulting in death.
All my opinion of course. I have personally never thought the SD SB has anything to do with this. The whole point of those relationships is to be wined and dined— a 3am park and this place does not fit the bill. I have always thought this was drug related (no not a drug mule or hauling drugs in her suitcase) just pills and such.