I'm Parsnip and I play Jennifer from Kyou Kara Maou and Hei/Li from Darker than Black. Sadly, Jennifer has not met Lockon yet in game but that's about to change soon! So, depending on who she manages to run into first, there could be some awkward (plans to do some pestering since Lacus isn't saying anything. Yay for nosy mom's!. On the other hand, she'll likely be able to tell who is who after meeting both even though she won't make a big deal. She was able to tell her sons had switched bodies once with no one else in the fam aware of it, so I don't see why she'd have many issues with twins ^^