Child's Scream Ghost Face Costume 8-10

Boys size Medium 8/10 although my daughter wore this last year, she's a girl's size 12/14. This is the bloody face ghost mask where you can fill a heart with fake blood attached to the mask with tubing. Squeeze the heart and blood starts running down the mask. I emptied and flushed it out with soapy water last year before storing away. I havent tried to see if it will work again, I dont want anything to leak during shipping. If it doesnt work, it can just be a regular Scream costume.