still got agreed in principle one meh........... O.O
i think a sms will work out fine., hi so and so, please be reminded that u have an appointment with me on dd mm yy, time, at place. if u wish to cancel and change ur appointment, pls call me, thank you.
LOL like those sms hospitals send to remind u of ur appointments.
ok jokes aside,i think u should just go straight to the point and remind her on theday before, or in the morning on that day u are meeting her if ur planning to meet in the morning.