She scowls once she realizes exactly what's happening but once she starts to fight it, the urge to sing to Sam takes hold harder. She throws a few hits his way as she sings and-- starts to dance around him.

♫Come on little boy,
Hark and hush-
You're still not fully ganking me,
I'll kick your ass so fleetly.
My wounds will heal completely.♫

She growls the last line, biting it off harshly.