Welcome to the forum
How old is she?
Do you know what her diagnosis is?
This guide helps with information about looking after piggies with limited mobility -
Looking After Guinea Pigs With Limited or No Mobility
A 4ft x 2ft cage is minimum size so technically it is big enough but bigger is always better, particularly as piggies should be kept in pairs. A 5ft x 2ft cage is recommended size for two piggies.
All piggies need a companion, even those with special needs. How long has she been alone?
The green links below explain cage size, how to bond two piggies and other information relating to companionship.
Cage Size Guide
Bonding and Interaction: Illustrated social behaviours and bonding dynamics
Single Guinea Pigs - Challenges and Responsibilities
Sows: Behaviour and female health problems (including ovarian cysts)
Companionship
Hay is the main food source - does she eat hay? Pellets are the least important part of the diet and she should only have one tablespoon per day.
Long Term Balanced General And Special Needs Guinea Pig Diets
Bedding comes down to personal preference. A lot of people with indoor piggies use fleece - either proper liners (which have the absorbent layer already stitched in), or put puppy pads down on the cage base and then lay a fleece blanket on top.
The guide below details bedding and how to use fleece
Bedding For Guinea Pigs - Overview
A Detailed Guide For Fleece Bedding
New Owners' Essential Information and Practical Tips Starter Collection