I have always followed the advice to sliver in backstory, and to keep flashbacks to a minimum. My story is about a woman who returns to therapy to conquer her childhood within the foster care system, while also dealing with her present circumstances that are triggering her past. This past week I've been doing a lot of thinking about this story and it's need for flashbacks at certain points. So my question is, because it's about a woman healing from her past, is it okay to use flashbacks at the appropriate moments?