”Yeah, yeah, we have to kill eachother. I don't see where that implies we have to hate eachother, though."
Mordred, in this form, is still undeniably pure at heart, with none of the rage and hatred tainting her that her elder Saber counterpart is well-known for. She still adores her King — although that adoration is somewhat tainted by the obsession of her mother, Morgan, which she also shares — and desires above all else to uphold the ideals of his era. She’s quite a bit nicer than regular Mordred; let’s say it like that.
Of course, this is not to imply that she’s completely different; she’s still brash, prideful, a tomboy and rather bloodthirsty. If anything, she’s simply a bit lighter. In combat, one would not be too incorrect if they compared her to Cú Chulainn; although she fights with fury, it is tempered with a genuine respect for those who fight fair. She loves a good fight, and (unless one of the other Knights of the Round Table is involved) doesn’t mind defeat if she gave her opponent enough of a challenge. Although dying might change her opinion on that a bit.
She has no clue about her connection to King Arthur, and, indeed, would accuse her own Master of lying to her if she was told about it. (Her readiness to accept her role in the Battle of Camlann, in contrast, does not paint the best of pictures; moreso, considering how horrified she generally is when confronted with it.) Without her knowledge of the identity of her father, she is much more self-deprecating, seeing her status as a homunculus as a curse preventing her from enjoying life in the ways afforded to most others; where another might have friends and family to go along with their profession, she only has her role as a Knight. Because of this, she is simultaneously envious of other, more normal people (such as her Master) and extremely pleased when someone presents her with an opportunity to live a little (such as her Master). The end result may vary.