Treatment completion rates will indicate whether the treatment is feasible for a predominantly postpartum population. Treatment completion will be defined as the proportion of participants who complete 6 or more out of 8 sessions.

Feasibility will be evaluated using descriptive statistics to determine the practicality of conducting the study and delivering the intervention. Retention rates (i.e., continued participation in study assessments - baseline, post-treatment, one-month follow-up), will provide information about the feasibility of collecting outcome data over time.

At one-week post-treatment, participants will attend a brief qualitative interview to review treatment progress and provide feedback on their care, including what aspects of the treatment were helpful and what could be improved, as well as feedback on the length of treatment and its delivery. This does not include a specific number or scale, rather, qualitative feedback on the treatment and their care will be reported on.

The CSQ is an 8-item self-report scale designed to measure satisfaction with health services (Larsen et al., 1979). Items are scored on a 4-point scale from 1 to 4, with higher scores indicating higher levels of satisfaction with services. Scores can range from 8 to 32.

The City Birth Trauma Scale is a self-report questionnaire designed to assess birth-related trauma symptoms and PTSD. It has 29 items that measure PTSD according to the diagnostic criteria of the DSM-5. The first two questions reflect whether the individual experienced a Criterion A traumatic event related to childbirth, asking whether there was belief of serious injury or death to self or baby during the labour, birth, or immediately afterwards. The remaining questions ask about DSM-5 PTSD-related symptoms during or immediately after an individual's labour and birth. It requires users to rate how frequently they experience each symptom statement on a scale of 0 (not at all), once, 2-4 times, or 5 or more times. Scores can range from 0 to 60, with higher scores indicating greater frequency of symptoms.

The EPDS is a 10-item self-report measure that assesses symptoms of depression during the perinatal period (Murray & Cox, 1990). Items are scored on a 4-point scale ranging from 0 to 3, with higher scores reflecting greater depressive symptomatology. Scores can range from 0 to 30.The EPDS has demonstrated good sensitivity and specificity for a diagnosis of Major Depressive Disorder (MDD). Cut-off scores of 15 and 13 or higher have been suggested for detecting a probable diagnosis of MDD during pregnancy and the postpartum period, respectively (Matthey et al., 2006).

The GAD-7 is a 7-item self-report measure that assesses anxiety symptom severity over a previous two-week period (Spitzer et al., 2006). Items are measured on a 4-point scale ranging from 0 ('not at all') to 3 ('nearly every day'). Scores can range from 0 to 21, with higher scores indicating greater severity of symptoms. A cut-off score of 10 or higher with sensitivity of 89% and specificity of 82% has been suggested for detecting a probable diagnosis of Generalized Anxiety Disorder (Spitzer et al., 2006). The GAD-7 has also been validated for use in perinatal samples (Simpson et al., 2014).