Amends section 1708(c) of the Public Health Service Act to (1) modify paragraph (1) to add explicit reference to projects to reduce teen dating violence and projects to increase abuse awareness, education, and prevention, and (2) replace prior funding language in paragraph (2) with new funding language covering fiscal years 2027 through 2031.

Replaces the existing 42 U.S.C. 10414 (DELTA) language with a reorganized and expanded Section 314 titled 'Domestic violence prevention enhancement and leadership' that authorizes a set of grant and cooperative agreement programs focused on primary and secondary prevention, culturally specific services, and underserved populations, and that specifies grant terms, reporting, and limited administrative/technical-assistance set-asides.

Amends the Specialized services for abused parents and their children provision to expand eligible program types and beneficiaries, update service-language to be trauma-informed and culturally/linguistically appropriate, and change grant term durations (initial 3-year term; renewals 2 years).

Amends the National domestic violence hotline grant to explicitly add digital services alongside telephonic services, revise personnel and service-language (e.g., advocacy personnel, training, expanded accessibility and language provisions), and update planning/operational requirements to include digital service users.

Amends Grants to State Domestic Violence Coalitions to adjust allotment cross-references to section 303, broaden collaborative language to include Tribal entities (as applicable), add substance use disorder language, reorganize certain paragraphs/subparagraphs, and make various technical edits to clarify inclusion of Indian/Native Hawaiian needs where applicable.

Adds Section 311A 'Grants to Tribal domestic violence coalitions' establishing a new grant program (beginning with fiscal year 2027) to award grants to Tribal Domestic Violence Coalitions, defines eligible entities and allowable uses of funds, and sets application and reallocation rules (including end-of-six-month reallocation).

Adds Section 313A 'National Indian domestic violence hotline grant' establishing a grant program to fund a 24-hour national telephonic hotline and digital services specifically for Indian adult and youth victims and their families; sets eligibility (Tribal organizations or nonprofits focusing on American Indians and Alaska Natives), grant term (not more than 5 years), and payment conditions (annual approval and subject to appropriations).

Amends section 301(b) (purpose) to expand and clarify program purposes to include family violence alongside domestic and dating violence, strengthen Tribal capacity, establish technical assistance/training centers and hotlines (including an Indian hotline), and support evidence-informed prevention approaches.

Extensively revises section 302 (definitions): updates/ adds definitions (e.g., child, dating partner, dating violence, digital services, disability, family violence), adds Tribal Domestic Violence Coalition, updates cross-references to other statutes, and harmonizes terminology (children and dependents).

Replaces prior authorization of appropriations with a new authorization structure: authorizes $270,000,000 per fiscal year for sections 301–312 and 313C (except 304(c)) for FY2027–2031, and prescribes percentage reservations and allocations (including reservation of not less than 12.5% for section 309).