She’s trying to do that suggestive tongue in cheek move, she’s just not doing it very well, or to put it another way, she really blew it.
Apparently there is video of that, too (along with that ear trumpet thingy, too).
https://www.youtube.com/watch?v=Vwy6gSs-ljA
Time Travelers in 1928 and 1938 film caught talking on a cell phone