It's not that she's not going to take back the throne- it's her birthright, after all. She just has qualms about, y'know, killing her brother. That's not something people do on a whim.
Rest assured, taking back her place as queen is still the end goal, and hiring mercenaries to supplant her troops (because she really needs a guard should Godwin decide to send a raid her way) is a means to that end.
Moreover, I wanted to play someone relatively soft spoken, with a gentle, more feminine visage. I understand if that might seem to clash with what you envisioned for the leader of a ragtag army, but that was my intention. Despite appearing frail and effeminate, she's still going to work towards those goals.