The mood meter will display Suki’s state (upset, normal, happy) at any given time. Annoying Suki (poking, shaking, blowing on the phone) will cause a negative reaction and make the meter go down. If the meter bottoms-out it will leave Suki very upset and unable to resume her tasks until she returns from cooling off. You can only get her in a happy mood by playing games with her and giving her gifts. It is encouraged to keep Suki in a happy state as she tends to be more flirtatious then