I think she'll be fighting for the baby. Ten episodes in, and I think its safe to say that she's still aligned against the Mutant Underground. I think the first episodes this season will have Lorna focusing on her new born baby, but I think after a bit she'll eventually get back out into the field. I mean Nix keeps talking about Polaris and Eclipse being divided despite still loving each other, so I don't think Lorna's changing her mind on anything. I think she just something else to worry about, and that's her child.
I personally don't care too much for the kid, and I'm shocked that its made it this far. Hopefully this child will be used in a way for Lorna to reflect on her own parents, and perhaps begin to see Magneto in a different light.