This is my guess..
May be Amruta will get ok quickly that night in hospital with an antidote,
but to avoid going back to jail till Mon (as Amruta can't actually approach high court for an appeal on stay order of bail) Chitnis family & Jahan may be shown acting that Amruta is still sick & bed ridden whenever Virat comes to check on her. 
On health grounds, police is allowed to take a under trail person to hospital for treatment,
think they can also get magistrate orders even on holidays to shift some patient home temporarily from hospital, as PS cell may not be conducive for rest.
Here both tasks, guess the Lord Virat will do on his personal guarantee, but not police..
In parallel Amruta will create alibi she is resting home during weekend, but keeps running away secretly in between, for her ongoing jasoosi to collect evidences to prove herself innocent.
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