Maria gasped in pain as the blade pierced her body. She hadn't expected Risa to fight back like that.

"Hah..." she groaned. "Guess that's what I get... for letting my guard down... ugh..."

She reached down and pulled the dagger out of her navel, before bringing it up to her chest, pointing inwards.

"I doubt I'd last... much longer, with the injury she gave me... might as well... end it..."

She thrust the dagger inwards, piercing her heart, causing her body to seize up for a few seconds before she crumpled to the ground, her vision swiftly going black...

(That seem like a decent ending?)