No. The law is not limited to married women. It applies to any woman in a domestic relationship, including:
a) Women in live-in relationships
b) Sisters or mothers facing abuse from family members
c) Widows or women who used to live in the shared household but were forced to leave
The key condition is that there must be a domestic relationship and the woman must have faced some form of abuse.

No, the Protection of Women from Domestic Violence Act, 2005 is not limited to married women. It applies to any woman who is or has been in a "domestic relationship" with the respondent and alleges domestic violence.

Under Section 2(f) of the act, 'domestic relationship' is defined as a relationship between two persons who live or have, at any point of time, lived together in a shared household, when they are related by consanguinity (blood), marriage, or live-in relationships, adoption, or are family members living together as a joint family.

No, initially the act was interpreted as a protection given to wife only but the SC has gradually increased its scope. In many judgments the SC has included female live in partners and even widows to be under the purview of DV act. Shared household term is interpreted broadly to include relationships of consanguinity, marriage and others and not necessarily physical residence.