Dude, she wants you.
I humbly suggest that you “get it on” with her daughter. Maybe then she won’t be so deliriously happy when you’re around. Even if that doesn’t work, hey, at least you hooked up with her hot daughter. 
OK, in case you’re seriously considering my suggestion, don’t do it.
next time just pull her in to your office semi-violently, slam the door and start making out with her.
What?
It works in all the pornos!
How about responding, “How could you be so cruel? This was my mother/brother/father/grandfather’s favorite song before she/he died last month of a brain cloud?” Or, “My sister used to love this song before she lost her hearing in a terrrible farm tractor accident.” It would help if you could break out crying.
Maybe this baby grew up to work in your office.
But first he would have to find some method of pumping out a pulsating mix of guitar waa waa pedal and fretless bass. Some sort of music player. A portable music player would be ideal. If only Mr. Bus Man were to have access to such a device.
Oh, I feel your pain. I had a co-worker like this a few months ago, thank heaven she moved away to get married to some widower she met on the 'net.
She was always giggling, either completely unnecessarily, or over something so painfully inane it made me want to bludgeon her to death with my stapler.
Mix in the fact that she had bleach-blonde poodle hair and no dignity, and perhaps you will understand why I spent most of the Winter fantasizing about pushing her in front of a bus.
I 3rd (or however many are before me) this. A blank, cool, I-am-not-amused stare works wonders with morons like this.
And WHAT, pray do tell, is wrong with “Hey Mickey”? Everything doesn’t have to be doom and gloom and “meaningful” to be useful or worthwhile!!! SHEESH!
+1
You should be thankful for her presence in your life; she is giving you plenty of opportunities to learn to be more patient and improve your karma. (Well, you can try looking at it that way, anyway, since killing her is against the law.)
aw hell no, just make the cheesy noises yourself when she starts unzipping your pants! Bow Chicka wao-wao!
ya know, like the first week I posted here I did this a couple of times, but never saw anybody else doing it, so I stopped, now I can start again, hooray!
+2 vs. undead.
Why not just tell her to shut the fuck up. Tell her if her unprofessional behavior continues, you’ll inform her new employer.
Wait. That won’t work, you want her to go to that new wonderful job. Right.
You know what she’s really trying to say? “Any way you want to do it, I’ll take it like a man.”
My cats were offended by this remark. They don’t giggle. 
I rest my case (in another Pit thread, but still!)
I second the “this was my dead mother’s favorite song” bit. Or you could just shoot her.
Stop giving her the look. She obviously craves your stony gaze. It makes her feel like she’s in the company of a loving parent striving to create healthy behavioral boundaries. You’re just going to give her what you want if you do that. All you can do is make that face that a dog makes if you look at them while they take a shit. Just pretend you are a dog taking a shit and she’s looking at you. Sort of wince and refuse to make eye contact. That’s a look she won’t crave so much.
That made me laugh aloud. Good form.
You stole my joke! Ohmigod your timing is soooo hilarious! Squee!
Ahem.
I like this. I’m off now to find dogs taking shits so that I might study their face when I stare at them…