Not sure if this will help, but some things you can do to encourage a story continuation:
Put yourself in the scenario. How do you want this to play out? Is this dream just the un-actualized fears felt by the sister, or does this anxiety stem from how the sibling treats her?
What are you trying to tell the reader? You've set up the scene to create empathy for the sister who feels put down by the success of her sibling. Do you want her sib to be kind and comfort her, or is she the antagonist? You could follow these pages up by showing what the sis's reaction is to her dreaming. Does she wake her up? Does she go back to bed and have her own dreams? If she wakes her up does she (dreamer) feel indecision about revealing her dream?
You may want to take the story forward to show us what their actual relationship is like in reality. Maybe the scene stays in this room, or you move them along to breakfast. Or maybe you delve into more dreams that end up waking the sister again, prompting him to respond?
I think if you start asking yourself questions you may be able to start brainstorming where to go from here.
Apologies if this isn't helpful. I think it's very well drawn thus far. I like how you have a couple different points of views/angles, and the action is clear and easy to follow in the pages you've shared.
Best of luck with your comic!
Edited for misgendering mistake.
