Droping subject based on scaling is the most stupid way to look at it. The scaling is the last resort.
If that's the case, I would have basically dropped all my subjects except MX2 and Cosmology. (considering that I am doing Cosmology)
And, to get 95, 80 scaled mark from each subject will be more than sufficient to get her 95 UAI meaning that she probably needs Band 6 in General Mathematics to hope for that mark.
Unless you know how she is cruising throughout her preliminary year, you cannot make a definite statement.