Awww! Cute! There are some minor details that could be fixed, as already mentioned by others, but this was absolutely adorable.

What a romantic story. Thank you.

The incorrect details ruined the story for me.
1. William Lucas is a knight, so he would be addressed as "Sir Lucas" not a Lord
2. Ann King didn't make any sense, Mary King was a relative of someone in the area and the only one with the "King" surname mentioned, you could have added a character with any other surname and it would have been better
3. Darcy insulted her at the Meryton assembly. At Lucas Lodge she refused to dance with him, that is also where Caroline had the conversatio with Darcy about the "fine eyes." Lucas Lodge and the Meryton Assembly are two different events. And even though Meryton is the closest town, Lucas Lodge is not "in" Meryton, the Lucas' own the land.
Overall, it was fine, but the changes in details served no real purpose and were confusing. I would suggest editing them out or expanding the story to establish those details.

What a sweet story!

Very sweet! A couple of things I noticed (ignore this if you were taking artistic licenseSir William Lucas is a knight not a lord, the Meryton Assembly is where Darcy insulted Elizabeth, and Darcy first asked Elizabeth for a dance during a different evening evening at Lucas Lodge.