This is a recent issue. Last week I started noticing things amiss in the kitchen, assumed it was DH and thought nothing of it. A few days ago DD proudly told me that she had been getting up in the night to get herself drinks. She was proud, she said, because we were out of milk (in Canada - bagged milk) and she had managed to get a new bag, put it in the holder, and cut the corner off with scissors all by herself "without cutting myself!!" she said. This made me slightly uncomfortable - mainly because our room is next to hers and neither of us heard her get up at all! I worry about what else she could get into while we're dead asleep.
My worries were justified when I went into her bedroom this morning and found an open package of oatmeal all over her bed, and a cup full of vitamins. She swore she only ate one, and poison control didn't think it was an issue (the cup was FULL of the vitamins, so she couldn't have eaten many). They're of the gummy variety - I forget the brand name but there is speculation that they are nothing more than fruit chews, anyway. She had to pull a chair into the pantry to get to them on the highest shelf - a shelf I need to get on my tip-toes to reach.
She is doing these things after DH and I have gone to bed and are fast asleep.
I don't know what to do about this. We talked to her about the danger of getting into these sorts of things. It'd obviously be stupid and unreasonable to gate her into her bedroom. DH doesn't want to gate the kitchen because he thinks that it'd be detrimental now that she's showing so much independance. And it's not feasible to remove EVERYTHING from the kitchen that could pose a danger (knives, uh...the stove itself...etc.)