"got connected to her wifi"
thats the reason you are getting the recommendation.
Youtube stores the data of videos watched using wifi and then tries to recommend other devices connected on the wifi.
Reason 2: have you talked anything about the show ? because it has been conspired and seen that google listens thru our microphone in devices and recommend ads even if you haven't searched for them.
tldr: Reason 1: Wifi cache. Reason 2: Microphone tracking.