Recommendation for a new sleeping bag

I can't comment on the nemo duo, but I do have one of the nocturne "spoon" shaped bags. It's a pretty well made piece of gear, and it feels much more roomy than a traditional mummy bag, at the expense of a few extra ounces. If she's a side sleeper she might appreciate the room.

Edit: they make a ladies version as well, though I don't know the EN ratings on any of them.

After you determine the correct size, temp rating and zipper location :) buy whatever WM bag matches those criteria. You will probably never have to replace it. You get what you pay for.

And thats all I have to say about that.