In line 253 Eliot quotes from Oliver Goldsmith's novel The Vicar of Wakefield by quoting a song in which the main character sings of being seduced and then ditched. Turns out it's a bit of a bummer.
And that corresponds pretty well to our typist's situation. Now that she's alone again, the woman just sort of walks around the room without thinking, "smoothes her hair with automatic hand, / And puts a record on the gramophone" (255-256).
The gramophone (or record player) hints at the idea that popular culture is part of what makes the girl's life so passive and superficial.
If Eliot wrote this poem today, he'd probably have the girl throw on an episode of Chopped: All Stars.