Bottom's up, bottomed out

So she's the one who pretends to care the most
Always the one laughing hard at all the jokes?
Well, her mind is gone, but she's hanging on for what it's worth
With her friends along she'll keep going strong for what it's worth
Oh early on you can see the better part
You know by now she could start to come apart
She's been here so long, but she's hanging on for what it's worth
And tomorrow's gone but she's tied one on for what it's worth
Every day's the same \"I'll just have one\" turns into ten before she's done
Daylight on her face? A faded memory
She's still the one who pretends to care the most
She doesn't know that it's still all the same jokes
All her friends moved on, but more come along for what it's worth
And her looks are gone, but she's holding on for what its worth