I'd rip the head off. Hold body in one hand, grab the head with the other, & just pull both directions. Fast, & painless, just alittle messy.Vitamin B for adult chickens, or humans? I definitely can give her some sesame seeds.
I'll do everything I can for now. If it's obvious that she's in pain, I'll put her down. Any suggestions on how to do that for a chick? I've only done it with full grown chickens.
Nutridrench would be best, or of Sav A Chick electrolytes/Vitamin in water are good vitamin sources.