Need some advice about my drug addicted daughter please?

ok, the cps has asked me to keep my grand baby until my daughter's hair follicle test comes back and further interviewing with my grand baby who's 3.. my daughter says that she's gonna test positive for extasy. she came to me and told me that she will go to treatment and asked that i help her get into treatment. well, i got her into a great treatment center, made arrangements to take her early in the morning, about an hour and a half away. well, her friend starts texting me, asking a bunch of questions on my daughter's behalf. all of the sudden, my daughter tells me that she'll take herself to treatment... i don't understand this... why do you think she now says that she no longer wants me taking her? i'm so tired of this. she's not the girl i raised. she's a liar, a theif (her and her druggy boyfriend robbed me blind). she has told lies on me to the cps lady... i've tried to help her. i've, up until now, paid her insurance on her car, gave her groceries, gas money.. she's hocked the title to her car, losing her apartment and her bf was arrested for beating her up and she's still with him. why do you think she come to us for help just to say, that she'll find her own treatment center and take herself? i'm devastated and worried that my grand baby is gonna go back into that invironment. my daughter was neglecting the baby and her druggy bf was mean to the little girl. what do i do?