Emlyn helps Sakura with her memories, emotions, mental health, training, and external issues or battles. She would also sometimes take over Sakura's body if necessary but she would need her permission first. One must be asking, why is Emlyn helping her? Why didn't Princeps help his holder when he needed to?
The answer to the question is simple.
Sakura has her emotional distress and pains too, but she was the one who died not Kakashi. She only regrets leaving his side and wishes to be with him for eternity if possible. Kakashi on the other hand is cursed to watch the love of his life die and there is nothing he could about it.
Emlyn could at least help ease the pain by comforting her or telling her it's not her fault but it doesn't help much.
Kakashi on the other hand would be broken to the point of no return and fixing. Princeps is trying to avoid this. He too knows that words don't work, comfort never helps as it only garners pity that makes the pain worse.
The only way to stop the wound from bleeding more would be to erase the facts. The ugly truth. The desolate past.
This was Princep's way of healing, though it only makes the pain worse over time. This method did help Kakashi for the time being.
Next, Emlyn has better mental health than her lover Princeps. It's the same with Sakura. Kakashi and Princeps are broken.
Emlyn slowly merged knowledge of the past with her depending on the level of difficulty or Sakura's progression. Music, arts, clothing, and others are also included as it also shares painful yet beautiful memories.
Since Emlyn is very proficient in chakra/manna she taught Sakura how to wield it slowly. One of them is making a small petal into a deadly weapon.
If Sakura manages to grasp all the contents and true teachings of chakra she will be able to become someone like Avatar Kora but more advanced, OP, and creative.
It is the same with Kakashi, but he is to be stronger than her as he was God's first creation.
Another thing is, that Emlyn can read or hear people's darkest thoughts and emotions. Sakura naturally has the ability because she's an armature. she can't turn it off, yet. This is why she was able to know Kakashi's thoughts.
Nevertheless, the windy, summer breeze brushed against their skins and Sakura decided to just stare in space as both sat down together on the bench.
Kakashi followed what she was doing as she was staring at the majestic, cherry blossom tree that grew.
He never knew such a thing existed, but the fact that he met her under this very tree is a blessing in disguise since it seems as though they are the only ones who know about it, making it very meaningful, but it is also going to be the very tree where their relationship hangs in the balance.
However, the more he sat with her, the more his heart began to ache as if it was warning him not to get too close or else he will regret it. On the other hand, it begged him to sit still and cherish the moment.
Perhaps this existed because he feared that the girl he had a crush on might be a danger to Konoha and he will be forced to hunt her down or kill her.
He didn't want to do that, but then again he cared a lot about this place. Konoha is his home and he vowed to protect it, even if it means killing his loved ones...with his own two hands.
He needed a break but he needed to say something. His eyes brightened when he saw her smiling to herself, and closed his mouth as he realized he was gaping at her like a fish. He's grateful to the mask for existing or else he would've looked like a complete fool in front of her.
"That song you sang...it was very beautiful. Did you compose it yourself?" he asked, trying to make a conversation.
"Nope," she said with a smirk. 'Yeah...for now. I'll let loose a little since it might be the last time, we will ever talk like this.' she thought.
"That song was made by a very gorgeous woman named Katy Perry. The song is called "The One Who Got Away". She's a singer. A wonderful singer at that." Sakura said with happiness laced in her voice. Sakura snapped her gaze to him and raised a brow at him.
"What are you laughing at, soyboy?"
"Nothing. You seem a lot happier."
"Do I now? I think I'm always happy though." Sakura said with a questioning look. Kakashi snorts.
"Well, of course, you do but you look a lot more - relaxed? Easy going and a bit carefree," he responded lightheartedly.
"Is that so. I never noticed."
"Of course, you wouldn't. You're the one talking, while I am the observer, Ms. Haruno."
"Oh, well Mr. Hatake do you mind enlightening me about what you meant by a quote on quote "Observer"?"
"Well, I suppose I could but uh- an observer is an act done by ninjas." 'Here it is.' Sakura thought.
"I guess civilians could understand but - you never know~. Some civilians are quite dumb, but their hardworking people, while you Ms. Sakura - are a woman filled with mystery." he continued.
Every word that escaped from his mouth made her heart pound. She is nervous. "I want to know more about you on a personal level but...maybe not." the surroundings suddenly silenced.
"Unless you answer all my questions truthfully, Ms. Sakura. I don't think we'll have a problem. Now would we?" he finished with his crescent smile. Sakura gulped. Screw preparations, it didn't fucking help her.