The first issue of the RO comic adaptation had some interesting extra tidbits. Gareth Edwards has an epilogue at the end where he states that they were going to try and include a lot of the film's deleted scenes in the comic.
Prior to Scarif the Alliance as a whole was really never prepared to engage the Empire in combat, regardless of the reason. All most of them wanted to do was simply cultivate political animosity toward the Emperor in the Senate in order to get a majority of planets opposing him. The Emperor knew this and was simply humoring them just enough until he could get a weapon that would keep everyone in line forever. So it wasn't just that Jyn's message came from an Imperial Weapons Engineer (her dad) or pilot (Bodhi.) Those other Alliance leaders would have literally found any reason they could to not engage militarily. That's why Cassian didn't even attend the meeting and knew from the beginning that they'd never support Jyn's plan.
Also she and that squid guy in jail at the beginning hated each other and had a mutual agreement that they'd wait until they were outside and away from the jail guards before fighting to the death! He even taunted her by suggesting that maybe it would still be a good idea to stay awake until that time. That's why she was pissed that she had fallen asleep and then just sat watching him after that water drop woke her up. When they're in the Turbo Tank she keeps glaring at him, just biding her time until they could fight off in the dirt somewhere. So when the Rebels showed up she was already in full war mode.
Prior to Scarif the Alliance as a whole was really never prepared to engage the Empire in combat, regardless of the reason. All most of them wanted to do was simply cultivate political animosity toward the Emperor in the Senate in order to get a majority of planets opposing him. The Emperor knew this and was simply humoring them just enough until he could get a weapon that would keep everyone in line forever. So it wasn't just that Jyn's message came from an Imperial Weapons Engineer (her dad) or pilot (Bodhi.) Those other Alliance leaders would have literally found any reason they could to not engage militarily. That's why Cassian didn't even attend the meeting and knew from the beginning that they'd never support Jyn's plan.
Also she and that squid guy in jail at the beginning hated each other and had a mutual agreement that they'd wait until they were outside and away from the jail guards before fighting to the death! He even taunted her by suggesting that maybe it would still be a good idea to stay awake until that time. That's why she was pissed that she had fallen asleep and then just sat watching him after that water drop woke her up. When they're in the Turbo Tank she keeps glaring at him, just biding her time until they could fight off in the dirt somewhere. So when the Rebels showed up she was already in full war mode.