Little previous research has elucidated the everyday experiences of autistic girls or their families. This study used qualitative in-depth interviews to explore mothers’ experiences of the diagnosis, presentation and impact of caring for a daughter with autism. Nineteen women with autistic daughters (aged between 7 and 18) participated in the research, which took place in Ireland. Thematic analysis identified six themes: What’s Going On?; Road to Acceptance; Beyond the Stigma of Autism; Autism: Like a Girl; Mothers Holding It All Together; and Mothers Roll Up Their Sleeves. The analysis suggests that the path of autism in girls in Ireland is marked by diagnostic delays, social stigma, interpersonal difficulties, mental health comorbidities and parental stress. However, these challenges were offset by the resilience of mothers, buttressed by pride in their daughters and support from other women. Results will inform the development of policy and practice that is sensitive to the lived realities of autistic girls and their families. Lay abstract Autism in boys has been well researched but very little is known about the everyday experiences of autistic girls or their families. Mothers’ views and insights can be very helpful in increasing knowledge around the unique demands of raising a daughter with autism. This study conducted interviews with Irish mothers to examine their own experiences regarding (a) getting an autism diagnosis for their daughter, (b) their daughters’ personal characteristics and (c) the impact of caring for a daughter with autism. The study suggests that the route to an autism diagnosis for girls in Ireland is made more difficult by delays and missed diagnoses, and often followed by inadequate supports. Mothers described autistic girls as presenting with social challenges and mental health difficulties. Many mothers experienced judgement from other parents and family members, acute stress and mental health struggles. However, these challenges were offset by mothers’ resilience, pride in their daughters and support from other women. The findings of this study highlight the importance of specific support for autistic girls and their families.