This paper conceptualises how young women-led everyday digital peacebuilding helps sustain institutional peace processes in the post-conflict Bangsamoro Autonomous Region in Muslim Mindanao (BARMM), Philippines. BARMM was established in 2019 following a peace agreement between the Philippine government and several autonomist groups. Despite this, peace remains fragile due to delayed peace transition commitments, clan feuds, political contestation, and socioeconomic inequality. This paper shows how Muslim, Lumad (non-Islamised Indigenous), and Christian young women use social media to counter hate speech, facilitate dialogue, respond to emerging conflicts, and promote inclusive narratives. It expands current understanding of everyday peacebuilding to include digital practices and highlights the often-overlooked role of marginalised young women as active peacebuilding actors. This paper combines social media analysis, kwentuhan (talkstory), and participatory design workshops. It identifies three interrelated practices of digital peacebuilding: platformed everyday practice, identity work, and community formation. In these digital peacebuilding practices, young women (1) strategically use social media to document their peacebuilding work and assert their peace agenda; (2) negotiate platform affordances and socio-cultural norms to sustain feminist peace ideals while asserting legitimacy, ensuring their safety, and protecting their well-being; and (3) expand their political reach by using social media to enable collective advocacy, access opportunities, and demand institutional accountability. These practices expand understandings of how everyday peace is enacted in digital spaces.