Your writing already has a really strong emotional rhythm to it, so I only corrected the grammar, spelling, punctuation, and a few sentence structures while keeping your voice and wording intact.
Mary Louise couldn't quite shake the feeling that there was something off, like there was a very different kind of energy looming around, one she could not quite name, yet somehow it felt familiar even when it was different. In a way, it reminded her of Nora, that same sweet and buzzing energy she had once felt so intensely, a feeling that brought both warmth and comfort, stability even. A feeling she had craved for so long, as it had been so long.
She missed her, in every sense of the word. Her voice, her scent, her sweet smile, her beautiful eyes, her heated touch. Everything that there was about her. To do magic with her, to feed on people with her. It felt just like a cruel punishment.
They had endured so much, from the moment they had fallen in love and had basically been forbidden to express that, as the times didn't allow it. Then the fact that Rayna Cruz had come to terrorize them, then the little stunt of the Gemini Coven, who had taken it upon themselves to send the entire Heretic Coven to that prison world. And well, the slow descent into madness that came along. Then finally, after what felt like an eternity, they were set free, only to be dragged into the next tragedy.
Then again, Mystic Falls was doomed. She knew that by now, understood it. Which is why, from all the places she could have settled down, Mystic Falls was avoided. New Orleans was her new home now. Not because of the cultural aspect, more so because she thought here she would find the solution, would find the spell or the ritual needed to resurrect Nora.
But with that came the endless spirals, the hallucinations, the thirst for blood. Ever since her own resurrection, she had been a mess. Then again, she had always been a mess. It's just that now that she was alone, it showed more.
"I miss you so much..." she mumbled as she glared away from all the grimoires that were laying on the table and sofa, her eyes falling onto the picture that sat in a beautiful frame, a picture of Mary Louise and Nora. A beautiful memory, one she cherished.
"I love you..." she sounded softly before she finally moved away. She was going to head out, find herself something to do, or rather, someone to taste.
Then suddenly, a surge of energy rushed through her. Something familiar again, something she recognized. Then from the corner of her eye she saw it, saw her. And as she turned around, she saw her fully, saw her standing in front of her.
Mary Louise remained silent, her expression bewildered and confused, even when there was a hint of equal sadness and hope within her eyes.
"Nora..." she sounded softly, her voice tender.
Was this perhaps another vivid hallucination?
Then she felt the touch, a touch that felt very rooted in reality.
"Nora... are you here? I don't understand..." she softly sounded. "Is this real? Please tell me this is real..."