Try sticking *just* the tube in, you'll be able to feel it on the right side of her neck and at the bottom of her crop. Then think about the 2-3 minutes it will take instead of however long it takes to dribble it in her mouth.
I have a sick rooster that weighs about 1kg and he gets tube fed 30-60ml of fluids or baby bird food mixed w/ Pedialyte at least four times a day. Sometimes I'll also give him a couple of ml of corn syrup.
How much are you feeding her?
Safeguard/Panacur (fenbendazole 10%) liquid or paste. You can find it in any feed store in the horse, cattle/goat section. It's used in sick kittens, puppies, foals, pregnant mares, reptiles all avian species and all other mammals.
I dose 50mg/kg by mouth and repeat in 10 days. Warning -...
Good job giving the water! If you don't keep her hydrated, she will die. FWIW, when mine are sick they get 30ml/kg of Pedialyte or lactated ringers tubed every 6-8 hours. The gut just doesn't work when there's no fluid as you have just witnessed.
As for how long it takes for the blockage to...