Taking kids out at elementary school isn't bad, but High school? They can't just say yes, she can make up the work. I mean she'll likely have 6 or 7 teachers! And no, you can't just make up labs. Doing a trip report or journal may be fine when you're young and in the same class all day, but in HS I would have had to make one arrangement for my math teacher, history teacher, science teacher, etc. That would be 7 trip reports! And even then, if it's not relevant to the topic she's learning (Doing a report on the hall of president is not going to work if I'm learning about Mesopotamia or World History). Isn't October PSAT time? I'm sure some teachers will let her make up assignments, but some will not. 5 days of unexcused absence at my school meant detention.
But what's done is done, you can't let yourself worry about it now. I would just check the school's webpage to see that at least you can overlap it with some time off, like exam days, or other holidays, so that she's really only missing 2-3 days of school.