@SkeletonShadowArlen spotted Willow looking around, how had he missed her before?
Something wasn't right. He had to double take and even then it took him a while to see through her illusion, but he did.
He curses himself under his breath for letting Lilith distract him.
He slowly walks over to Willow and with a big bright playful smile starts talking to her.
"And how are you today? I don't believe we have met yet, the names Arlen."
While distracting her with chit chat he cups his hands over the injured arm and a soft warming pure white light emanates from within his palms casting a positive healing energy over the injury. It should vastly speed up the process and leave the effected area rejuvenated.
Once done, (it shouldn't take long) Arlen firmly and seriously asks.
"How did this happen?!"