I believe the elements Kara remembers are more vision guideposts than actual, physical navigation objects. We know the hybrid is aware of the future in advance, due to the cylon god's incluence, so certainly Kara could have a vision of future events that will guide her to Earth. Specifically, the triple star that Kara painted looks a lot like three cylon baseships. Maybe they are "flashing" because they've been damaged. I suspect Kara will see the "rebel" cylon baseships, recognize that the damaged ships are part of her vision, and then ask for their help in finding Earth. Just a thought!