The streams are HUGE. I have over 100GB of her streams and my PC its super bad, so I cant even edit then. The only place I can post big files its go file but they get deleted there after some time. I dont have a way to permanent place on the internet.
You can record with many ways. Go after twitch downloader. If you need to watch her sub VODs to edit what you wanna download in case she publishes then, use the "TwitchNoSub" extension to watch any sub VOD.
Use twitch recovery to get the m3u8 file name of her stream from the twitch server, using the twitch recovery program. Use this old version here "TwitchRecover-CLI-v1.2" because you can get the m3u8 file name using her stream link using the twitchtracker site. Then use the link on any m3u8 downloader and you will get the full stream in max quality, no ads.
All these twitch things you can get from github. I hope my explanation here can help you.