The easiest would probably getting a FireStick and just putting stremio as an app there. So your girlfriend can always go to the same place and find all of her shows/movies in great quality in one spot.
Glunkbor
This is a guide that someone on Reddit wrote and it helped me a lot. It looks complicated with the first glance, but when you do the steps it takes less than 15 minutes. I changed the order of the original slightly and added a few infos to make it easier:
"Guide installing Stremio with Torrentio and Real Debird on your desktop.
Stremio
Go to https://www.stremio.com/ Download the relevant client for your platform (Windows/Mac/Linux) Open Stremio and sign up with email or facebook
Real Debird
Go to https://real-debrid.com/ Sign up Go to Premium Offers ($3 for one month, $16 for 6 months) Choose a package and subscribe
Torrentio
Go to https://torrentio.strem.fun/configure Choose your options for providers, quality, foreign language etc You can now choose to install Torrentio without a Debid Provider. Personally I use Real Debrid to connect directly to a server vs having my IP shared in peer to peer and to speed up performance. Torrentio has a slot for a possible API key (the Real Debrid key) To install with Real Debrid follow the next steps: Go to the API key with this link: https://real-debrid.com/apitoken Copy the API Key and go back to Torrentio and paste it under RealDebird API Key Install
Stremio with Torrentio installed
Check the addon installed correctly Click the puzzle piece up on the top right that says 'Show All Addons' Click My Addons and scroll until you see Torrentio Test stream a movie or TV show Go to Discover Click on a Movie or TV show and click 'Show' You should now see [RB+] Torrentio - Quality Enjoy streaming"
Yeah same, I got it on my Firestick and it works like a charme! Got my vpn on the Firestick active as well and I could not be happier!
Streaming companies are lucky that not more people know about Stremio + Torrentio + Real Debrid. That combination is a game changer and allowed me to get rid of all streaming services.
If somethings takes less than 5 minutes to do, do it right away. Don't waste time thinking about when to do it, reminding yourself the whole time, risk forgetting about it, don't procrastinate about it. Do it right away. You get so much more stuff done and are way less stressed.
Learning about healthy eating and exercise.
I think it depends which one you take, how open they are for external software. But with Firesticks or cubes you can do 100%. With others it might be worth googling beforehand, if Stremio can be installed on that specific tv box you choose. On those boxes you just need Stremio as an app. The app on your box then syncs with the settings and addons you have in the desktop version, so no hassle.