Loved this chapter and story. Harry certainly is growing up and maturing quickly.Cool that he decided to try out Snape's spell.

What is Snape sick with? Does it have anything to do with the ritual? 

I hope Luna is okay. Nice that Harry was able to use the DA coins to check in with his friends.

I was thinking that if Harry knew the spell for a stretcher he could put Snape on it and have it follow his if he walked or flew.

They need to eat more than croissants and biscuits. No protein would make them fatigued as well... maybe they can raid a home for some canned beans or meat?

Some corrections I noticed:

Harry sent out a wise-spread Depulso 

wide-spread

He turned his back on the thunderous but slightly confused Snape gave at this 

confused look

Love this can't wait for next chapter and curious wondering if Harry might lose a limb in the future feel like that could be hella interesting 😛