lz:

With your revision, your story has hooked my interest.? It’s certainly a topical issue in the context of the #MeToo movement.? And it concerns the most pervasive dirty little secret of family life.

However:

“In order to save her relationship” tells us what the stakes are, but, alas, doesn’t constitute an inciting incident.? What triggers the situation that puts her relationship in jeopardy?

Here’s a suggestion for your consideration:? What if the inciting incident is her forthcoming marriage? No sooner has she said “I will” to his marriage proposal than she starts having PTSD symptoms: nightmares, etc.? And whereas they had a lively sex life before then engagement, now she goes frigid, has panic attacks whenever he makes a seductive overture.

Why?? Because of the prospect of being given away by her father on her wedding day.? The fact that he gladly agrees to footing the bill for the wedding — no expense to be spared, only the best for his daughter — is no source of consolation or reconciliation.

Inserting a wedding? date into the plot also embeds a ticking clock? that heightens dramatic tension and urgency:? she MUST resolve her past before she can go through with the wedding and she has only so much time to do it.

Best wishes with your writing.

fwiw