No need for a spray bottle, just a few drops on a cotton ball or paper towel waved in front of her nose convinced her let to go.

I have had very defensive babies, especially the Tarahumara dwarf localities, but they were very fast nip-and-runs, not bite-and-wraps.

That doesn't mean there aren't defensive adult boas out there, you just need to ask the seller about the snake's temperament before putting down money if you're getting an older critter.