I would assume that Faith Vickers has primary custody of the child Xandah Vickers. It would come down to Faith as to if Ariana Vickers gets to see Xandah.
That begs the question, what the hell Ariana Vickers is/was doing wrong to not be able to see her grandchild.
Sure. Maybe, just maybe Ariana is some special Saint who isn't a fuck up.
But keep in mind this is the woman who married Matt Vickers and raised Faith Vickers. I strongly suspect she is just as much trailer trash as those two.
I mean really. For an adult daughter to prefer a screw up like Matthew Vickers over her mother says something.