Earlier this evening I saw herself leave via her cat flap. Now our house has an unusual lay out so the kitchen cat flap goes to a lean to which then has her outside cat flap which was locked by that time. You can't see into the lean to from the house. She can go in there and keep an eye on her garden.
After she went out I was either in the kitchen or the living room. At no point did I hear her cat flap go again. Yet at bed time, when she has a little extra food, she suddenly appears from upstairs.
Then after this, I hadn't left the kitchen, when she turns up in the living room. I swear she didn't walk passed me.
They are cunning buggers. I swear it's magic.