I would be suprised and then try to use the 'gulit game' on him for attacking his mother. WWYD if you were Kovu and Zira tried to do what's written above?
I'd start running to see if she can keep up! But then I'd stop and ask her what: ''What is it,Nala?'' What would you do if you were Nala and Mufasa asked you that?
Reply "Do you know where Sarabi, Simba and my mother are?"
WWYD (Mufasa) if Nala asked you this, you knew Sarabi Simba and Sarafina were playing a joke on her by hiding from her all day, to suprise her in the evening?