Tuesday's Child - Traditional Regency Romance & Back Story

My new novel is Tuesday's Child, a traditional Regency Romance, by which I mean I don't open wide the hero and heroine's bedroom door.  It is a follow on novel from Sunday's Child and Monday's Child, which will be published in spring, 2016. It is a stand alone novel but because the heroine was a minor character who played an important part in Sunday's Child the back story is crucial. Back story is always tricky. I think I've solved the problem by the heroine observing a scene and reflecting on the effects of past events effects on her present and introducing conflict.