Anyone else think that there's no reason for this to be a time travel story in the first place? Usually, the point of a time travel story is that the MC relives their life, taking advantage of their future knowledge to make the most of key events and also making the most of being an adult in a child's body. Sometimes also being forced into awkward situations because they're an adult in a child's body and being treated like a child. None of that happens here.
The main point, knowing the future, is rendered pointless because the danger is so obvious from the start and because she lived isolated. She has no particular skills or knowledge she can use to change things. And because her mental growth was stunted from abuse and lack of interaction with people, she behaves like a child anyway. So what's the point of the time travel?
Consider an alternate scenario: she is adopted by the count, spends one week in that cabin, with the daughter hitting her and the count getting angry at her for being hit, and she escapes from the estate, terrified because she has nowhere to go. The count happens to show up and see her missing and sends guards chasing after her. She runs into the prince on the town, the guards catch up, and the events of chapter 1 unfold as they did. And the story carries on, exactly the same except for no time travel being involved. Does anything really change?