Feyre Archeron is a warrior by necessity. She fights for survival out of necessity, not because she loves it. Feyre picks up her bow and arrow because its a matter of life and death and not because she harbored dreams of conquering cities or joining armies.

Of course she put that weapon down in favor of tranquility and peace the first chance she got. All Feyre ever wanted to do was paint in peace- she says that in the first few chapters in ACOTAR. She wanted her family to be safe so she could paint without worrying about the world.

I'm so tired of people coming for her for deciding to have a family or acting like there is something disgusting and foul about wanting to be a young mother. It's not a choice you'd make for yourself- thats valid. But its so in line with Feyre's character to want that.

In the midst of a looming war, Feyre doesn't want a baby. She has to be the warrior. She changed her mind once the war was done- after she watched Rhys die and thought they all might die, too- that's not some massive betrayal or weird retcon/authorial insert. That's just...Feyre...finally having some peace and realizing it was finally safe to start building the life she had always wanted.