Answer: I think it is trying to ask.
Since when be in her school today ?
or when will she be in school today
Explanation:
Desde - from, since
cuándo -when
estás - to be
en - in, on
la -the, her
escuela school
hoy - -today
The wording is a little confusing but the best answer I can give u is-
“Since when are you in school today”
