Help! Bonnie Needs a Real Title

Help! I'm almost finished with Bonnie, and I still haven't come up with a title. I feel like I'm stuck in a bit of a rut, so I thought I'd throw some ideas out and see what you guys think:

BEFORE AND AFTER

BEFORE AND AFTER YOU LEFT

BEFORE AND AFTER YOU WENT AWAY

FROM HERE ON OUT

ME AFTER YOU

WHERE WE GO FROM HERE

I know it's tough to evaluate a title when you have no idea what the story's about, so here's a query-style summary I came up with on the fly as well as the first page:

The Summary When seventeen-year-old Karina Hart gets a text from an unknown sender--at pearl st bridge. its over--she doesn't assume a race ended. She assumes the sender's about to jump. And sure enough, when she gets to the bridge, she finds Matthew Singer, who's standing on the railing, considering the drop. Before their lives went down the toilet, they used to be friends, and Karina sees Matthew as a chance to redeem herself.

Fifteen-year-old Karina Hart knows as soon as she gets home that her sister is dead. Still, she can't quite believe it when she finds Lily in the bathroom, an empty bottle of sleeping pills clutched loosely in her hand. Lily promised her she wouldn't kill herself, and like a fool, Karina believed her. If Karina hadn't been so stupid, Lily would still be alive.

As the front story moves forward and the back story moves backward, Karina realizes why she feels compelled to save Matthew from himself and, more importantly, where she needs to go from here. But knowing and doing are two very different things, and Matthew's life isn't the only one that hangs in the balance. If she can't figure this out, she might lose her mind, literally.*

The First Page I get the text on Monday night, in the locker room at the Y. My phone chirps in my pocket, but I don’t pull it out. My parents would assume I’m either in the pool or on the road, and none of my friends bother to contact me anymore. I towel off my hair, then stuff my things in my bag. It isn’t until I’m trudging out the door, the last one to leave (as always), that I slide my phone out of my pocket. I don’t recognize the number, but the message makes me trip:

at pearl st bridge. its over

A dozen explanations race through my head--a car died, a race ended, someone just had a baby on the side of the road--but the only one that makes sense is also the only explanation I can’t think out loud.

I flick back to the number and remind myself to breathe. The digits gleam in the dim light, but I still can’t place them. The number isn’t in my contacts, and the sender didn’t sign.

Whoever sent the text didn’t mean to send it to me.

At least that’s what I tell myself as I half jog, half stumble across the parking lot to Lily’s car--my car--the car she left behind. For the first time since I inherited it, I have a hard time getting the key into the lock.

“Stupid key,” I mutter even though I know my hands are trembling. As I climb into the car, the only things I can think about are those six little words: at pearl st bridge. its over.

I know it's almost as tough to evaluate a title based on a few hundred words, but if you have any thoughts, I'd love to hear them! (And if you have any other ideas for the title, feel free to throw them out!)

*Please note that I realize how vague and mostly unhelpful that third paragraph is. It's just hard to summarize two diverging plotlines in a single paragraph, and since this isn't an official query, I don't want to give myself a headache:)