What was it that Alice complained to Duncan about?

She complains that he is forgetting his "damsels in distress" in the midst of all his soldiering,

"Ah! thou tyrant! thou recreant knight! he who abandons his damsels in the very lists," she cried; "here have we been days, nay, ages, expecting you at our feet, imploring mercy and forgetfulness of your craven backsliding....