@CuriouslyHer Hello I'm glad to hear that you enjoyed it. Keira's Fire was the first one written, and the first in the series, so good start!
The order I'd recommend is:
Keira's Fire
Daughter of the Rebellion (sort of the sister story to Keira's Fire - it follows Cecily over the same period of time)
The General's Daughter (focuses on Cecily's daughter, Keira)
Princess Bride (second part of the younger Keira's story)
Madeline (this one is sort of a spin off to the rest of the series, so you do get some spoilers, but not too many, I think)
Evangeline (the younger Keira's daughter)
The Price of Forgetting (Madeline's daughter)
I'm also about 80% through follow up story to Evangeline. I've had a bit of writer's block, but eventually, there will be another story in the series