The chord progression is
C, G, Am, F
The entire time

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Verse 1
Eight years old
Watching everything she's known
Burn to the ground
She stops the tears
And blocks the
Voices in her head
That are way too loud
She keeps those thoughts in
And holds a smile
'Cuz the voices haven't stopped
And they won't for a while
Because

Chorus
She knows, that on the inside
Those smiles, they were all lies
Thought that she could do it
They thought
That she was just fine
But little did they know
She was dying on the inside...

Verse 2
She's older now
She's finally figured out
That nothing gets better
She feels insecure,
Like she doesn't fit in
Her friends say she's wrong
But she doesn't listen

She's been lost for so long
And she'll never be found
They don't understand
Only she...knows...

Chorus
She knows, that on the inside
Those smiles, they were all lies
Thought that she could do it
They thought
That she was just fine
But little did they know
She was dying on the inside...

Bridge
She's lying there crying
Her dad, slowly dying
Everything's falling apart...
And she knows...

Chorus
She knows, that on the inside
Those smiles, they were all lies
Thought that she could do it
They thought
That she was just fine
But little did they know
She was dying on the inside...

Outro
Little did they know...
She was dying on the inside...