Like I said before, she is not Holland at all...I raise Hollands. They have very wide heads and wide, short, compact bodies. Their ears are also small and would definitely be lopped by 4 months old.
Your rabbit does not have lop ears. I do see that they flop over a little at the tip, but they are otherwise vertical ears. She is also too narrow and long to be any part Holland.
I am guessing that she is just a "rabbit". Meaning that she's a definite mix, but not from two purebred rabbits...a mix from two other mixed breeds. Her conformation combined with colors and markings do not really suggest any breed in particular. I do breed and have researched a lot about the ARBA recognized breeds, I just don't see any of them in specific coming out in her.