Fluffy: currently, I have a photo of me at 4 years old and I’m looking at it every day asking her how I can help her. It’s not easy as I am ashamed of her/of me. Such awful shame and fear. How can I be a good protector of her when all I’ve ever done is let her and myself down?
She's talking to you & letting you get close more than you realise, I think. You feel her shame & fear. She's still in the moment of it whereas you've moved on & made a life for yourself - for all of yourself, including her. You've been a fine protector. You just need to welcome her into your current life, to let her know that time has moved on, that things are different now. Tell her that those things happened, but they're over now.
Draw a timeline & look at it & absorb how much time has passed since she was you/ you were her. I mean by that, draw a line on a piece of paper & at one end mark 0, that being the start of your life, & at the other end put your current age & 2022. Then mark on the line things like this child (with her age & the year), maybe when the abuse started & stopped if you know that. Add anything that comes up or seems significant. Ponder it, make realisations, show the child how much time has passed. And keep reassuring her.
Tell her that what happened to her happened, but it's over now. It's been over for a long time. Tell her you have a different life now, & she's very welcome to join you in it. Tell her that you want her to be happy & you can help her to be happy, & that you will heal together: that when she tells you her truth, you will both get better. Tell her that you love her & you're there for her. Tell her that she hasn't done anything wrong.
It may feel as though you're speaking into a void, or she may react, or you may feel the pressure going down. Be prepared for anything, basically!
And if things get more difficult sometimes, please know that this is perfectly normal. It's not a smooth path: it has its ups & downs. The times when it's more difficult are not a sign that it's all gone wrong or that things will never get better, so never despair. There is always hope, always another day.
It's also normal for things in the here & now to trigger old memories & feelings. They can be worked through safely & can lead to new breakthroughs.
I think you've done wonderfully already, & I send you all good wishes.