I don't know if what will I say is correct but it's one of OG(?) Manhwa where the FL is stuck in a dukedom and she didn't know she knew magic, the magic is like sealing form in ground(?). She was kept by the duke, I don't know if it's correct as well but the duke / ML was taking care of her like a bird.
Also the scene I remember was the FL outside and was over a ground seal magic.
AHHH I hope I remember it correctly
it may be this https://www.mangago.me/read-manga/untouchable_lady/
Parang gagu ka naman pre kitang LDR tapos ginaganyan mo yung tao, deserve mo yan letche ka paiyakin pa talaga ang bebe ko
SIYOON ASAN KA NA SASAKALIN NA DIN KITA VAKIT NYO GINAGANYAN BEBE KO
Fucker leaving us, I mean her hanging like fish bait.
Pag Hindi pa bumalik Yan tangina, mag momove on Yung babae