It could be also, well - pigbacking in your own suggestion!
"It takes strength to dream and realize that the road takes you beyond what you can imagine and see!"
"It takes strength to dream and realize that the road takes you beyond what you don´t ever imagine, let alone see!"
It could begin with "girl" as you have worded, but then it could have "dear friend/friend" etc.
Or other ways, it would depend on the degree of informality and how close friends you are.
By the way, as Marcio has pointed out; you came up with an excellent translation. Take my comment here just as an addition to the thread and perhaps as an increasing of emphasis (of drama, kind of.) to the sentence.
Or even as a bit of poetical licence, although my poetical licence has expired !