Date night?
Having finally got his attention and kept it long enough to actually get a commitment of sorts out of him that required him to leave the lab, Janet turned her sharp little mind to the actual business of getting Hank OUT of the lab and to said commitment.  She'd decided they would go on a date.  A real date.  A date that might end in smooching or better if he was a good mad scientist (and if memory served, yes, yes he was.)  The lure would have to be a cute  outfit, of course, which naturally resulted in a full and busy day of shopping, pedicure, manicure, and other girl-making awesomeness. 

She showed up at his lab ten minutes early, a perfect specimen of one smokin' hot Avenger chick who sometimes has wings.

"Hello, Hank."