This one is so Jas(especially the first 3 rows),she also wanna take that first step.
"Belle reprise" also imo.

Belle (reprise) because it's a bit more melancholy, Jasmine isn't as perky and optimistic as rapunzel so the lyrics don't suit as well

also Touch The Sky from Brave

Since how both Belle and Jasmine are stuck in their life and dreaming about life in the outside, so this song reflect them best. When Will My Life Begin don't suit her much; she isn't as optimistic as Rapunzel imo.

Also Just Around the Riverbed. But this one is pretty much spot on.

Apart from the references to living under the sea, I can imagine Jasmine singing something like this. Or really, something like Out There from Hunchback.