Lose the dvds sometime this week. Or allow her to watch the dvd in her own room as a special treat. And don't get sucked in to buying the sticker books, or cds, or any other related paraphenalia.
Just be glad it is something you don't like watching. My stepsons got into watching Father Ted when they were 6 and 8. All was fine and we watched it with them. Until the umpteenth viewing of the videos. Ten years later I can now watch an episode without going mad. I can still repeat it word for word.
It almost caused an international incident when we went camping in west Wales and took a day trip to Ireland. You try stopping a 6 year old doing his Father Jack impression all day.
