Glad the weather is going to be nice, we've had similar this week too...
While separating is fine to give her a break, just to be clear, the drake is *not* causing her laying issues... this is a straight out reproductive issue... hopefully her system will return to normal, but there is no guarantee, just want you to be aware...
I actually had a hen (chicken) who had almost these exact same issues... even separated by herself, they continued... eventually it wore her out to the point I made the decision to cull her... it was just not worth her struggling that much... not saying this will happen to your gal, but letting you know why we are concerned and stress monitoring her...