Not Nesting Wolf

What is the chance of my wolf losing her litter? She's pregnant for 3 more days and unnested.

I'm not nesting her because it was a mistake mods won't fix

There's no Cotton Root Bark item so I'm at a loss here. Is there any way else to get the pups to die? :/

If she does lose the litter too, how many days cooldown will she go on? Still 20 or less?

I don't know the chance of her losing the litter, so far my (mistakenly) unnested wolves have always lost 1-3 pups but never all of them, leaving 1-2 surviving.
There is no way to stop her pregnancy, you'll have to wait until she gives birth and then chase the remaining puppies.
Even if she loses her litter, it is still a full 20 day cooldown.

I'm guessing you bred her to the wrong wolf? If that's the case and you have the gc to spare, the quickest way you can get her in heat again would be to use an instant birth feather because that would shave of the 3 days of pregnancy. Sine there is no way to just end it :(