Lesson for every parent of a teen, and especially and teen or new drivers: your life is more important than any curfew. Ice forms on roads that you cannot see, especially at night. Even rain can make going "a little fast" fatal. If you think you might be late, stop and call, then drive home as slowly as it takes to be safe.
Off my soapbox now. Daisy's Mom, just hug Daisy, look in those droopy brown eyes, and know that though it is a dreadful way to learn, maybe people will drive a little more carefully, at least for a while. Hug your pup, even if she thinks you're being all wierd with you face leaking and all that - she will love you anyway, and probably do something so goofy you laugh despite it all! (Go, Daisy!)