I'd recommend against getting involved with her.

She may be one big lump of evil, but she doesn't actually have any ill intent, she's just like that.

Then why're ya workin' for a gal like that?

Why don't ya just run away?

If I ran, someone else would just replace me.

I don't want anyone else to become like me...

And also... because I pity Seiga.

She may not realize it herself, but... she's lonely.

She loves other people, but she's just not quite right in the head.

So almost unconsciously, she seeks out a companion.

And to her, whether that companion is alive or dead doesn't matter.