I think what Mr. Arnold just said really covers what his original subamendment said. What I took to be the only substantive addition was “and matters related to her department”.
If Mr. Arnold intended for the supplementary estimates (C) to be added, that certainly negates the opportunity to do this in the first week of February, because they probably won't be tabled, and there was nothing in Mr. Arnold's original subamendment that spoke about the length of time the minister would spend at committee. The only substantive addition was the matters related to her ministry.