You want to keep her safe – that is the most important. I don’t, and this site doesn’t have the resources you may need to insure this for an outside bunny. There are things you should do underground as well to prevent her from digging out. There are different diet requirement for bunnies that may be outside (depends on weather), so I seriously encourage you to find resources that may help you create a safe outdoor enclosure if you absolutely cannot bring your bunnies inside. (I will message you about the other resource)
I also hope you may be able to talk to you parents about how to have indoor bunnies.
https://www.youtube.com/user/101rabbits. The owner of that channel was a BinkyBunny member and many many years ago she was in a similar position with her parents. She was able to work with them and bring them inside eventually and now she is a great resource for indoor bunnies!
What are the reason your parents won’t let your bunnies inside? What are their main concerns?