"Uh... bye" At this point, Quill would begin to have a silent mental breakdown
"Rosa. Listen... You need to agree with me here." He would strictly tell the spirit
"Yeah. Yeah. I'll do my best. Maybe..."
"Rosa Negro! Listen to me. I am your host, so you will do as I command."
"Depends"
"SERIOUSLY, LISTEN" He would dramatically raise his voice possibly drawing attention to himself
He would take a deep breath and head for his homeroom, whispering quietly to Black Rose, who was still being obnoxious.