First (and foremost) - we have Hagrid telling Harry, way back in book 1, that one thing that was odd about that night was that Voldy even attempted to kill Harry. It may sound weird, but apparently Voldy would usually leave the children alone after killing their parents.
This reading of Hagrid's words assumes Hagrid speaks with the accuracy of a lawyer. We know he doesn't. The odd thing is Harry's survival, not that he was attacked in the first place. Order members Marlene McKinnon and Edgar Bones were killed with their entire families. (Though we don't know if that means small children, grown children, parents who were living with them or what, but it does mean more than the person and hir spouse.) Hagrid's phrasing is because he is all emotional and misty-eyed, so he hesitates and goes back and forth.
This does assume that she couldn't even apparate within her own home (as opposed to just a barrier against apparating 'out').
That's pretty simple: She didn't have a wand on her. After much deliberation I think canon implies (though indeed doesn't state) Apparition requires a wand. When Harry tells the wandless Muggleborns at the Ministry to join someone with a wand to Apparate them away he himself isn't sure it would be possible. When Ron attempts to Apparate out of the Malfoy dungeon the text says he was trying to Apparate without a wand - as if normally he did use his wand for Apparition.
As for barriers against Apparition - at 12GP it was only possibly to Apparate in/out to/from the stairs outside the front door (as implied from the kids' behavior in DH) but it was still possible to Apparate within the house (as the twins did all the time).
This reading of Hagrid's words assumes Hagrid speaks with the accuracy of a lawyer. We know he doesn't. The odd thing is Harry's survival, not that he was attacked in the first place. Order members Marlene McKinnon and Edgar Bones were killed with their entire families. (Though we don't know if that means small children, grown children, parents who were living with them or what, but it does mean more than the person and hir spouse.) Hagrid's phrasing is because he is all emotional and misty-eyed, so he hesitates and goes back and forth.
This does assume that she couldn't even apparate within her own home (as opposed to just a barrier against apparating 'out').
That's pretty simple: She didn't have a wand on her. After much deliberation I think canon implies (though indeed doesn't state) Apparition requires a wand. When Harry tells the wandless Muggleborns at the Ministry to join someone with a wand to Apparate them away he himself isn't sure it would be possible. When Ron attempts to Apparate out of the Malfoy dungeon the text says he was trying to Apparate without a wand - as if normally he did use his wand for Apparition.
As for barriers against Apparition - at 12GP it was only possibly to Apparate in/out to/from the stairs outside the front door (as implied from the kids' behavior in DH) but it was still possible to Apparate within the house (as the twins did all the time).