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I'd monitor her closely and if she shows any signs of being in pain then I'd take her in. Sometimes they can linger and you need to make a choice in helping them to the bridge.
People do different things when their little one passes over.
Pot burials are popular with a large planter and then planting something like bulbs and a small shrub. You could place this on your patio. Some people ask for cremation at a pet crematorium. We bury ours in the garden. You may have a favourite park or walk where she could be laid to rest during a quiet spell or a friend or family with a garden? If you need to wait till spring with a hamster who has passed over then You need to prepare a plastic tub then wrap gently in a cloth and freeze till an appropriate time.