Note that she is not in jail for being found guilty of killing her step daughter, she is in jail for failing a drug test.
She killed a child and is only facing 6-8 years in prison for it yet the only reason she is in jail for drugs in her system??? Incomprehensible!
It sounds to me like she's in jail because her bail was revoked. It is common to make weekly drug tests a condition of bail. Of course all she has to do is come up with the 300K and she gets out for whatever time remains before her sentencing hearing for killing the girl.