Meeting...

me: the subject says the meeting is at 12:15, but your invite is for 12:00. what time is the meeting?
she: the meeting is at 12:15.
me: so why did you schedule it 12:00?
she: coz, i did not know how to send an invite for 12:15

How to live with such folks? There is no drop down selection for timing, but cant they use their uncommon sense to see if the text box is editable?