Oh my god!!! Darcy's Mum is played by Rachael Stirling! She is in a mini series called Tipping the Velvet where she played..... a lesbian 😉 Heartstopper has such great actors and amazing characters ❤
She was also in Doctor Who Series 7 Crimson Horror, alongside Matt Smith, Jenna Coleman, and her mother, the late Dame Diana Rigg (aka Olenna from Game of Thrones)
This scene doesn't happen in the books. Her mom isn't featured much at all except sometimes as a voice arguing with Darcy. So... so far, no, she doesn't stop lol
In the book it is mentioned but because the book mainly focuses on Nick and Charlie we don’t find out much about the other characters so they have used this freedom and explored the other characters a lot more in the show