How do you write apology letter for absence?

dear madam or sir (if you know the teacher name so write his name)

This is to inform you that my daughter(child name)(her/his class name) was suffering from high fever.

she was at the hospital for 1 weeks.

i apologise for any inconvenience that happened due to her absence and please forgive her i beg.she must look at her health zen about shcool

your faithfully,

(parent signature)

(parent name)