I think it's more abusive to make a dog hold it for hours until you can take her out or force her to go out in bad weather. Since you live in a high rise apartment, it is very practical.
Using a pee pad doesn't mean your dog will never go outside. You can still take her for walks, stroller rides, meetups, whatever. A pee pad just gives her an indoor toilet.
Ask your friend if she likes indoor plumbing or would prefer to use an outhouse in the middle of the night.