"Then what's even the point of helping them? They don't- They don't have the technology to even get us home! Even if we help them it won't do us any good then, Pearl." So what, they help the Barrayarans win a fight and still can't go home for it?

It's not like they have the means to send them home, and if they don't have time to wait? What if the Cetas find out that her and Pearl are helping the Barrayans if they do? It' doubtful they'll be able to even go home in that case.