Does she have some sort of special attack? Yes! One in particular.
I don't really have a name for it at the moment so I'll call it "Death".
Death is a simple "dash through enemy" type attack, which basically has a 1 in 4 chances of actually working, if it does her attack becomes 50 times more powerful.
She's also immune to bleeding, as she doesn't really "bleed out" since she refills her blood continuously.
And yes, in the image she has a red and blue aura, which is mostly cosmetic.
The combat section is done, now let's go onto a bit of backstory.
This little girl has 2 traumas, being hunted down by scientists since she was 5 and being put in an Asylum.
Parents? Classic "she's a monster!" parents, so they abandoned her when she was 5, coincidence?
Around the same time, scientists found out about her and her regeneration and... You know how scientists are.
She was heavily experimented on until she was 11, at this age she escaped, massacre? Not sure, but she did have a few snacks.
Where did she escaped to? London probably.
Oh did i forget to mention she's british?
She grew up, from what she knew, orphan and always thirsty... But f**king water wasn't alright so she feasted on people's blood.(She was a bloodfiend from birth)
That's when she was put in an Asylum, for the next 6 years.
Oh guess what, she f**king escapes from this f**king high security asylum while drinking a bit of nice fine red liquid.
Time skip, most things gotta be found out by rp'ing.
How did she get the sword? Some workshop probably made it for her.
Alright bye i gotta draw.