With a blank account and now avatar or pictures, even I find that slightly suspicious. Regardless of how many years your been on here. Seriously, standing up for a friend is cool, and commendable too. However, if she was doing it repeatedly, it's no surprise she was perma-banned.
Links to other sites as spam is pretty much bannable on MOST websites anyway. That's kinda common knowledge.
I find this "perma-ban" to be a bit severe although strictly stated in the etiquette policy
So wait, it was clearly stated that such things would get your friend banned, and still your friend posted that link? Guess what that means? The warning WAS given in the policy that is very well available for all to read. If you choose not to heed the warning there, you get what you deserve The admin don't have to tell you, because the fact that your friend is perma-banned should tell you their answer.