I got inspired so I decided to write :) Tell me if you like it, and tell me if you don't!
English is not my first language so I'm sorry if I made some grammar mistakes.
Takes place after On My Way, there will be spoilers.
And my username will tell you what my ship is ;)

"Dear Diary...
Everybody may think that Rachel Berry would be used to write in a diary but I've never done it before. My dads told me it would help, I just hope they are not asking me to write in it so they can sneak into my room and finally understand how I feel. Would they understand though? I don't even understand myself...
How am I even supposed to start?"

Rachel Berry was chewing on her pen, trying to write all her feelings out but she had no idea how to do it. It has been six weeks and she was still not able to say a word, literally. She had lost her voice, the words just wouldn't come out anymore. Everybody thought that she was just doing one of those things divas do when they feel misunderstood, after all it wouldn't be the first time Rachel Berry was pulling the silence treatment card. She really felt misunderstood but this wasn't a silence treatment. Stars don't shine forever and Rachel Berry was fading into darkness.

"I'm not a star anymore Diary. All this positive energy I had is gone. And nobody cares, because the only person who ever cared is not here anymore and I've had to face the fact that I'm invisible now."

The pen was wandering on the paper, wondering what to write next. This definitely wasn't easy but she had no choice but to try it because life had become unbearable. All the colors were fading into black and white and the small brunette knew that she had to be strong to be able to smile again.

"Why do we always wait to lose the one thing that makes us alive to realize how important it was in the first place?"

The first tear she had cried in 6 weeks landed on the paper. Rachel took a deep breath and wiped the upcoming tears before she started writing again.

"Six weeks ago, I was supposed to get married to Finn Hudson. I know that this is a stupid idea and I can see it now, Finn and I aren't even together anymore because he doesn't really care about me like he said he did. He was trying to find a reason to live when he felt like he had nothing else. I don't really have any rights to be mad because I felt the same way when I was at that chapel."

Writing in a diary actually felt like a relief and Rachel started writing faster, letting everything out. Her heart was aching so bad she felt like all this feelings she had been hiding inside of herself were the cause of why she couldn't breathe as easily anymore. So she was writing as fast as she could, hoping to save herself.

"I really am ridiculous sometimes... I had everything I wanted: NYADA, amazing friends, very supportive family and life at school wasn't so bad anymore. I was not getting slushied anymore and everything was great. But somehow I felt so empty, like something big was missing or just like things weren't right the way they were. My relationship with Finn wasn't as comforting as it used to be, we were slowly driving apart for a reason that I ignore. When he asked me to marry him I thought that it would only bring me closer to him and that this empty spot was finally going to be filled.
I asked Quinn first though. Why Quinn? I don't know, I should hate her but I don't. I don't really listen to any of my friends' advices but her's. I keep asking myself why but I really don't know. But whenever I feel like I'm all alone in this world she is the only one who makes me feel special."

She started chewing on her pen again. She was crying but her breath was coming back and she was slowly calming down. What was she writing exactly? She was used to write on the structure of her essays for school but this was so different. Her thoughts were driving the pen to where it was supposed to be and her feelings were finally making some kind of sense. She had no idea what those feelings were but at least she was opening her eyes and seeing them for the first time.

"I don't feel special anymore. I know my dads are really great to me and they're trying their best to make me feel better but it's not the same. Now that she's not there anymore I miss her. I even wish she was walking in McKinley's hallways and insulting me right now, it would make me feel better than if she was just not there anymore."

There was a knock on the door. Rachel quickly closed the Diary and hid it before she wiped her tears and got up to open the door. Hiram was behind it.

"- Darling, dinner is ready."

Rachel nodded and followed her dad downstairs.
Both of them looked terrible, they had been looking like that for quite a while now. Their baby girl was not speaking anymore, she wasn't even singing anymore. Every dinner used to be an excuse for the Berry family to sing together for an hour. Rachel would always be either singing for her dad to pass her the salt or talking to her daddy about what song she wanted to sing in Glee Club. Now dinner was just a big awkward silence.
The brunette sat down at the table and waited for her daddy to fill her plate but both of her parents were just sitting next to each other looking directly at her. They couldn't stand the silence anymore so Leroy decided to break it:

"- This can not go on Rachel Barbra Berry."

Hiram followed:

"- We tried everything to make you happy baby girl.
- Hiram you can't be the nice cop here we decided that we would both be mad.
- I'm sorry. But Rachel you need to understand how worried we are."

Rachel was looking down, she felt the tears falling on her cheeks and she didn't even tried to stop them. They were right, this had to stop. She nodded and looked at her dads. As soon as they saw the tears they got up and walked towards her to form a big family hug. The silence was being replaced by the sounds of Rachel crying and they all knew that this was probably the best thing that had happened to them in a long time.