Aurora believed that it had only been a year since she was cursed in season 2 which Mulan had to reveal it had actually been 30 years. Since Regina was no where near casting the dark curse in 414, Aurora must’ve been cursed twice, especially as where she woke up in season 2 looked nothing like where she fell asleep in this episode. In Fruit of the poisonous tree, Regina was still playing the innocent card before she had Leopold killed and revealed her true colours. Snow was then exiled to banditry. We know she met Charming whilst Belle was still at the dark castle and her relationship with Rumple had progressed to banter. Belle helped Philip in the Outsider which was after Skin Deep and Regina was full on Evil Queen at that point and hunting down Snow. Enter the Dragon is definitely before Fruit of the Poisonous Tree. Regina is the continuity issue because her behaviour and attitude is not that of someone plotting murder. Regina was taking away everything Snow loved, the horse was first, Leopold would be the next thing.
Perhaps Mulan got it wrong because she got this information from Philip who also got it wrong because he was cursed too, and no one could tell him properly how long he had been cursed for.
I know I am reaching, but like I said…not a perfect fit, but it does kinda fit.
I had also suggested Aurora being cursed twice, above, and on page 2 I had already pointed out that Regina was not plotting revenge until the events in ep14…so we are in agreement on these two points.
Keeper of Regina's bravery