<p>Interpersonal epistemic invalidation, often described within the broader gaslighting literature, has been linked to psychological distress, yet little is known about dynamic cognitive processes that may be associated with variation in reported exposure over time. Metacognitive awareness, defined as the capacity to monitor and regulate one’s own cognitive states, has been theorized to confer greater epistemic destabilization. However, prior research has relied primarily on cross-sectional designs, precluding separation of stable individual differences from dynamic within-person change. In a three-wave longitudinal study of 300 adult women residing within arranged or family-structured marital contexts assessed across a 10-week interval, we applied a random-intercept cross-lagged panel model (RI-CLPM) to disentangle trait-level associations from intra-individual temporal dynamics. Metacognitive awareness and gaslighting exposure were measured at each wave, alongside a multimethod behavioral subsample (<i>n</i> = 30). The invalidation measure assessed subjective interpersonal experiences without specifying source context. Longitudinal measurement invariance was established prior to structural modeling. At the between-person level, women with chronically higher metacognitive awareness reported lower overall endorsement of interpersonal epistemic invalidation experiences. Critically, at the within-person level, increases in metacognitive awareness above an individual’s typical baseline were prospectively associated with subsequent decreases in self-reported gaslighting exposure across both lag intervals, whereas reverse pathways were nonsignificant. Component-level analyses indicated that conditional knowledge and information management processes showed independent prospective associations with subsequent reported gaslighting exposure. In the behavioral subsample, observational indicators showed increases in reflective questioning and decreases in confusion and withdrawal across time. These findings are consistent with the interpretation that metacognitive awareness may function as a dynamically enacted regulatory process associated with subsequent changes in reported gaslighting exposure. By separating stable traits from short-term fluctuations, the present study contributes to understanding of cognitive processes that may be relevant to resilience in contexts involving sustained interpersonal invalidation and epistemic challenge.</p>