We don't know what happened, but obviously there's a context here.
One would hope that the message was sent by a means reasonably calculated to give you notice. If you had previously communicated with the site director by text, perhaps that's why she texted you.
Notice is notice. If you didn't get notice you can argue to DYFS (as you apparently did) that you didn't get the text message.
What is it that you want us to tell you?

