Hearing loss is very isolating and makes it hard for FaceTime to work consistently. Even telephoning can be hard. That makes even a daily or weekly check-in increasingly challenging.
The elderly decompensate quickly when in hospital or rehab etc. even just over a few days. Physically and mentally. It can be surprising how much function they can lose in a short period of time. Maybe look through her place and remove tripping hazards like small rugs etc. Many old people...
If she does go online, be careful about how she guards personal financial and ID info. Unfortunately I have found the elderly to be quite gullible with spam, phishing, etc.
Have been through this with many relatives. Unfortunately falling is the start of the downward slide. In my experience it just gets worse as time goes on. How about asking her what she wants to do? Road trip? Favorite places?