Couples therapist experienced with step parenting issues

Hello!

My partner and I are looking for a couples therapist with experience supporting couples struggling with step-parenting / cohabitation transitions. My partner has no children of their own, and no prior experience of being partnered with a parent. I am the sole parent of 15-year-old twins, whose other parent died 7 years ago. We could use some therapeutic support and coaching in supporting each other best during hard teen moments,( someone who understands the complicated ways the parent needs support which is different than how the step-parent needs support)  and the best strategies for working as a team and not letting teen issues create distance between us. In-person is preferred, but not a deal breaker for the right person. Albany/Berkeley/North Oakland preferred. Expecting self-pay. Thanks!