We all get days like this. Don't dwell on the sad stories, there'll be more good ones than sad ones.
If you still have the dead lamb, you could show it to her and see what her reaction is. If she clearly wants to mother it, then it may be that a lamb will give her something to get well for, and make her recovery more speedy. If she's disinterested, then you may be right and she needs peace and quiet to get over it at her own pace. Personally I will always try to set a lamb onto them, because I genuinely think they do better with something else to think about. But she's your ewe and if your gut instinct is telling you different, you do what you think is right.
IME, the prolapse will get bigger and start to stay out. so you'll have to keep a close eye on that one. It's not a big deal to fit a spoon or a harness, and she'll lamb fine if you do that, but of course it's generally held to be a bad idea to keep such a ewe on for another lambing.
It
will get better, it really will. I promise.