Mama, my heart goes out to you. Your little angel is so lucky to have such caring and loving parents, able to give her the best of care. And how encouraging that your work with her to date through traditional Indian medicine is having positive results. We don't know why some little souls incarnate with serious health problems, but I have to believe that each of us on the planet is here to learn and to teach. Your daughter may be a wise old soul, teaching her family new lessons in love and compassion, while her doctors learn more about infants with her medical conditions. From what you have written, and judging from the moon in her natal chart, your daughter experiences you as a very sensitive and compassionate mother.
With respect to your horary question, I don't view horary as a type of fortune-telling. For one thing, my skills are very imperfect, so please just view the following as merely the best guess of an amateur. Please let us know the outcome, however, because that way we will learn to do astrology better.
My sense of the chart is that an answer will be found-- if not through the present round of tests, perhaps by revisiting and rethinking some of the information already collected.
Your daughter is represented by the 5th house of children. Her doctor/s would be the 7th house from the 5th, or the 11th house on this chart. With Aries on the cusp of the 5th house, she is represented by Mars; and the doctor is ruled by Venus, with Libra on the 11th house cusp. Then we also see Uranus in the 5th house and Mars (the planet ruling doctors) in the 11th house.
The moon generally shows the action in a horary chart-- as well as what is on the questioner's (your) mind. The moon is applying to a perfect sextile with Venus, so this is a positive indicator that the doctors will make a diagnosis. The moon is also strengthened by being in mutual reception with beneficial Jupiter.
Mars is in detriment in Libra. Both the doctors and your beautiful daughter would seem to be in a weakened condition. Mars makes several aspects, so is by no means powerless to act; but these aspects are squares, indicating tension and frustration. No doubt your baby's doctors feel very frustrated at being unable to find a cause or cure so far; just as your daughter's condition is difficult for her to experience, as well.
Venus is retrograde, returning towards Mars and Mercury, so I wonder whether maybe some information already gathered has been overlooked, and might be worth revisiting. Hopefully around the 17th of January, when Mars and Venus perfect their aspect, the medical people will get some answers: you will hear a bit later, of course. However, this will be a square aspect, so please prepare yourself for the doctor's report as feeling stressful to you.
Your daughter is very fortunate to have such a loving mother.