Soon > [As soon]
2 She was ashamed to be so loose surprised
loose > ungirt, naked
3 And waxed half wroth against her damsels slack,
waxed half wroth against > half grew angry with
4 That had not her thereof before advised,
advised > informed, apprised
5 But suffered her so carelessly disguised
suffered > allowed disguised > {Dressed in a fashion different from that which is customary or considered appropriate}
6 Be overtaken. Soon her garments loose,