I did see it when you first posted it. I'll take another look at it.
I write it again because no one seemed to pay attention:
In Switzerland there is also a project going on about scar free healing. At the "Kinderspital Zürich" they seem to have invented a skin replacement with all functions of the normal skin. They write that it should heal without scars.
I contacted them and they already test it on childs and in about 1 year they will test it on adults (Though i dont understand why you test something on childs first. But atleast they are already testing it on humans, what is a big step)
I've seen that picture of your scar and to me it doesn't look bad. A lot of women like "battle scars" like that. It adds character. But if it really bothers you you shouldn't waste your time with rose hip oil as I think it's not something which will help. What could help is to let it heal with a healing accelerator which is what is around nowadays where you have substances that dermatologists can use to speed up healing. It is a fact that the faster wounds heal the less scarring there is. So that's in my opinion your best bet. To go to a surgeon once you've got the money and talk to them about that. But like I said it doesn't look bad to me. Maybe over time you'll feel differently about your scar and lose the desire to have it changed.