Honestly, I have NEVER understood the whole State Secret of Xmas Presents thing. Maybe because I was not raised with the Santa tradition, but I just don't see the point of all the obsession about secrecy. What on earth difference does it make if the recipient finds out ahead of time what gift he or she is getting?
DH and I have been married for nearly 20 years, and this issue caused the ONLY real fight we have ever had in that time. He went ballistic last year and tried to do this to DS after he opened some boxes before Christmas, and I essentially said over my dead body. He is obsessive about the secrecy thing, and I refuse to enforce it.
I hate surprises. Always have, always will. DS is the same way. DH knows this, but he's still obsessive about the whole "you MUST be surprised on Christmas, no matter how miserable that makes you" thing.
When I was a kid, I perfected the art of Christmas snooping. I'm not sure if my parents ever knew that I did it, but even if they had, they wouldn't have gotten angry over it -- it was just a game. Gifts sat out in the living room for weeks, and we all shook and prodded the boxes trying to guess what was in them -- I just took it a step further and unwrapped them at 3 am. I also took pride in restoring the wrapping perfectly to its original condition, and I'm danged good at that. (I still get practice, because my relatives have a habit of sending battery-operated gifts to the kids without the batteries, so I open the boxes and put them in before Christmas morning. It's impossible to tell that they have been opened. I use a needlenosed Exacto knife, an old credit card, and a crafter's glue stick.) I'm famous for this in my family; it is now widely known that I can open ANY box without a trace, and my relatives like to come up with all kinds of wacky ****ytraps to try to stop me. Never works.
A cornered 9 yo who knows that he is between a rock and a hard place will ALWAYS lie to try to get out of it
if you give him a chance to. I am betting anything that that woman is just like my DH about the sanctity of The Secret, and he figured he was doomed anyway, so what did he have to lose? Kids that age are not logical that way, especially with a furious parent looming over them.
I'd punish my child for lying, but not that way. By returning the gifts she made it more about what he saw than how he reacted to being caught.