She can practice on a pillow

As said earlier, shorter whips are easier.

I recommend wearing something to protect your head, like a thick hood, just in case. Even a hat would be better than nothing.

For a beginner, I would say stick to the butt area at first. Wrapping is a concern, maybe wear something to protect your genitals or put a pillow against your lap.

"Id like to avoid skin being broken welts etc. Is this possible?" Easily avoidable, but this depends on the whip you're using, and how much power is going behind it.

I'd also recommend avoiding inescapable bondage first time around. I've seen pros hit themselves with whips before on accident, you'll want to be able to help her if something like that happens, though rare.

Keep a trauma/first aid kit nearby I also keep smelling salts and water/juice/candy near as well.