Virginia Child Welfare Attorney - Parent Overdose & Child Removal

When a parent overdoses and ends up in the hospital, could it result in a CPS call? At what point does a child get removed from the home due to drug use? I'm writing a story and doing some research. I'm in Virginia, not sure how different the laws are from state to state regarding mandated reporting. If a parent overdoses while in the home with their child, and it's the child who calls 911, does that warrant a CPS call? If so, who would be responsible for making the call, between the paramedics at the scene, hospital staff, etc? Would the police also be called in this situation? Would this event alone warrant separating the child from the parent? In my story, the parent is estranged from the rest of the family, so there'd be no one to take the child. Would he end up in the foster system? I'm also wondering if this would bring about any charges or potential jail time. Would the police search the parent's home, and potentially charge her with possession? Does overdosing with a child in the home constitute a crime? My first thought was child neglect, but I'm not sure. Would the parent be at risk of having her parental rights terminated? The school I work in has a social worker, and she's said it can be really hard to terminate parental rights, even when it's what's best for the child. But when I was reading about it, I saw VA has a legal deadline for parents to remedy the situation before CPS applies for their rights to be terminated. It sounded like it was pretty set in stone, but the school social worker made it sound like it's in the hands of the judge. What's been y'all's experience? For what it's worth, the story has a happy ending, and the child and his mother reunite eventually. I just wanna do my due diligence in accurately portraying their struggles as best as I can. Thanks for your help!