Hearing Blondie's speak worsening make you think back on that fateful night where you turned Max into her. You remember willingly trowing you at him hopping for a opening all while wishing he had been too dumb to even think of betraying anyone. Even though he had claimed he wanted the both of you locked as women, you didn't expect him to so readily let you give him a blowjob, but he did. You'll never know if he had said the truth or was simply too far gone into pleasure-land, not that you care much.
Then she spoke for the first time, and her vapid voice and speech, without speaking of her empty-headed stare, made it clear she had become just as stupid as you had wished, which made you revise your plan. Instead of locking her in the chair and waiting for the morning so you could lock both Max and yourself as male, you decided locking someone that prided themselves so much on their brain into the dumbest bimbo ever was some sort of poetic justice, to the point you made Blondie drink all of it, just to be sure she would never turn back into Max.
But now Blondie seemed to become even more stupid as time passed, to the point it might very well endanger her life. And while Max was a piece of shit, you didn't want Blondie to die over it. She wasn't responsible for the actions of her previous-self, after all. When you gave Max a blowjob he became a dumb bimbo. You couldn't give her a blowjob anymore, but maybe doing the nearest thing would work. Maybe you could wish some intelligence back to her while ‘eating’ her pussy, and have it work.
"Say Blondie, what do you say of having sex together? Just you, me and your bedroom?"