I was going to say don't dip your pen in the company ink. But since this seems to be a job you don't give a shit about losing:
Look at her lips when you talk. I don't know if it's true but I hear it makes chicks think of you romantically. So if you do this and she doesn't puke a little in her mouth, you might have a shot.
Always position yourself facing her when you talk to make it seem like you're interested. Watch for her to do the same. If she gives you a shoulder, she's not that into you.
initiate contact and see how she reacts. If she recoils, you have no chance. If she leans into it, BINGO, get to the walk-in cooler ASAP. If there's no reaction, you still have a shot, just keep working it. The contact needs to be non threatening. Like touching her shoulder as you're holding the door, or touching her arm while you're telling a joke. Don't pull a tyen and grab her by the pussy. Also, if you're walking somewhere, stay close and keep your hand close to hers to see if she wants to hold it.
Those are things normal people would do. You might also want to offer her meth.