Can't get my cat to ingest benedryl?

the vet told me to give her half the adult dosage but i cant shove the pill down her throat so i've tried other things. I crushed it and mixed it in her food. She must've tasted, or smelled it because she didnt eat it. I also dissolved it a bit in water so it became pasty and put it in her mouth which she swallowed but made herself throw up.