Welcome to HCM,
As it is your guess work only, doesn't require any explanation.
It is possible that treating doctor wants to continue intra venous medicines for one more day.
Blood pressure could have gone down initially, but after improvement when she is about to get discharged, chances of low BP
are few only.
Similarly without normal blood glucose
level, it is very difficult to achieve improvement.
Instead of guessing, you should have discussed your doubts with treating doctor.
Thanks for trusting Healthcaremagic and posting your query.
Hope you found my response to your query informative and helpful.
If you have further concerns in this regard, you can submit those with Healthcaremagic as well.
With good wishes,