Buddhist Burmese categorize Thilashin as tawdwet or ngebyu. A nun who was previously married or widowed before choosing to be ordained is a tawdwet. Ngebyu nuns or young women who are "young and pure," usually virgins that seek ordination as a nun as a profession.
Because ngebyu nuns are considered to have more knowledge of scripture and the practice of meditation that are more accorded more respect that tawdwet nuns.
Source: In Search of Buddha's Daughters by Christine Toomey
