time to go to the vets?

[KitaCat]

I got her in february, from a breeder, so I'm sure she did.
My scale's been broke for a few months, but I'm picking one up this weekend. I just see her spine a lot more than my other balls
The methods I've tried are braining so far. I was thinking of scenting with tuna juice, I hear that works.

And as for live, if she doesn't take it, should I wait and feed her first so another ball will take it down?

Ah okay, so she's never eaten in your care?
This may sound silly since you've tried braining already (which is way more drastic haha), but have you tried leaving the f/t rat overnight? I have a lot of snakes that will only eat that way.

Also, have you tried...
Offering a smaller prey size?
Offering a different colored rat?
Offering mice?

If you've crossed all that off the list, I'd try live. And yeah, I'd feed her first so you don't waste the rat if she doesn't go for it.