Maybe a straw? Or a big girl cup without the lid on. Cordial, juice, lemonade? Anything.

I know how hard that is though. DD2 had tonsillitis & I couldn't get anything into her. Her temp wouldn't go under 39 either & she just slept all day. She was so swollen in the throat.
If you don't go to the hossy tonight, I'd be heading straight to the GP in the morning for some abs. If her throat is that bad, she might need them.
We headed to hossy & DD was in for 5 days with NGT..