Following is a letter written by parents for their daughter to his Class Teacher, requesting the teacher accept his absence due to stomach pain. Please note that this leave letter for the current situation (today) and not the past.
F/o Student Name, Class VII,
The Class Teacher,
Since My daughter has severe stomach pain she is not able to attend the classes today (today’s date) . Kindly excuse her absence and grant her permission to attend the classes from tomorrow onwards.