Hugabun,
We don’t know where you live, but I would recommend you do two searches. One on Petfinder.com to see where the bunnies advertised on there that live the closest to your town are available. They usually list all local shelters that have bunnies, so scan the rabbit lists nearest your zip code to find the nearest rabbit shelters. She can take her bunny there. Of course, we highly recommend she just learn more about bunnies and take the responsibility, but if they won’t, there may be more than the HRS.
The other is to use the HRS website to do a vet finder for your area and call local vets to see if they can help rehome the bunny.
Please do not use this website as a way of getting one of our members to offer to take it. That is not allowed and the post will be deleted. Local vets and rescues are your best bet for help that is safer than advertising on Craigslist for example. Also, she can post on Petfinder herself I think.