If she consistently shows aggressive behavior or lethargic depressed behavior from being alone, than thinking about stimulating toys and climbable items for her space could help to keep her amused, if she likes that. You can also try putting on white noise, like YouTube videos or a show you typically watch when you’re home. You can also leave items that smell like you in her space, like the pj shirt or pants you wore that day or something, so she feels secure with your scent.
If she isn’t showing those loneliness behaviors, I wouldn’t worry too much. This weekend actually, Wick is home alone from 8AM to 11PM, so he really isn’t getting as much attention as he’s used to. The TV has been left on for him, but typically he’s really fine when I return home. Wick is a single rabbit and I used to worry about him being lonely, but he seems happy regardless!
If you’re curious about her behavior, set up a laptop to webcam and watch her one day while you’re gone. You may be surprised that she just lounges all day potentially.
The answers provided in this discussion are for general guideline purposes only. The information is not intended to diagnose or treat your pet. Seek the advice of your veterinarian or a qualified behaviorist.