While this could be true, and I do not disagree it very well could be, the bleach, clean-up and blood indicate something done after that which probably resulted in her death though. This also leaves BB2's indication she last saw Maleah on Monday questionable, which is something that has been wondered about as well.
The only thing that I question about it though is if she was showing signs of abuse, and you believe BB was part of it, why would she ask CD to take her in or anyone to do so? They would not want the abuse noted period.
Jmo.
To me that seems to speak to her feeling conflicted. Maybe she asked CD in an attempt to distance herself, thinking she or DV wouldn’t be connected to whatever injury was there. Then maybe she realized she was still risking getting in trouble, called him back and said DV would do it.
Just my speculation.
ETA, or to give her a little more credit that she may or may not deserve, maybe DV bullied her or threatened her or promised he would take her, or any number of other possibilities, I guess.