Writer's Block (Starlight Sorrow Sneak Peek)

I've managed to write part of cheeapter two of Starlight Sorrow, but I'm stuck and can go no further. I won't show all of what I've written because it's a third of the prospective cheeapter length, but here's some of it.

Back at the daisy patch Sky landed in, Reznor returned with a zebra filly. Who is she? Sky thought. Probably the zebra hero. She answered herself. "So we have three heroes now." Sky said. "Any hints as to where the other ones are?" She asked.
"Zecora said something strange," Reznor told Sky, "about the stars leading to the unicorn. You met with Sweetie Belle, correct?"
"Yes I did." Sky answered. "But she didn't even know what I was talking about! She couldn't be the unicorn hero. The 'stars leading' part could mean a number of things. The Celestial Plane, or the Dreamscape, for instance."
Reznor nodded in agreement. "Well, whatever it means," Reznor replied, "Zillie and I will help you do this. You can count on us like one two three!"
"Let's go ask Mid... I mean... Twilight for help!" Sky suggested. "She probably knows what it means."
The three heroes trotted over to Twilight's Castle, where they believed they would find Twilight. By the time they got there though, she wasn't home. Then Sky remembered. Lucilia said that Twilight and her friends were busy fighting Queen Sombrette. They're probably all the way over in the Crystal Empire or something.

Can anypony help me?