Isa,
If you can say without revealing too much, I'm going to need a scorecard here.
Your Daughter speakes Dutch in school, and they read stories in Spanish. Do they use Spanish throughout the day? Are the stories "Chapter Books" or "See Dick run?" Can you get ahold of "audiobooks" in your Primary Language? Then you and DD and DS could snuggle during reading time.

What do you and other adults speak at home?

Do she know any letters in either languge (which ones?)
Does the school notice the depth of her play? Is it worth making a video of one of her productions to show them, or at least keep as a keepsake.

Has it already been suggested to check her vision, both acuity and muscle control? Does she seem to be learning the letters when the teachers teach them? Does she do better when you do it verbally? "Dear, what makes the "ffff" sound?" I have heard that for Bilingual kids they start slower and catch up all at once.

This is a tough one. How does she feel about going to school? If you keep her home, could you hire a tutor to be her friend and help with the letters?

Sincerely,
Trinity


Coaching available, at SchoolSuccessSolutions.com