The woman herself, Ms Rogers, was well known for her amusing criticism of students' artwork and being somewhat racist and defending it with 'having taught across the world', being Spanish, and having a Muslim dad. Her Instagram account was later found by students and it had some... questionable images of her smoking.
She and Mrs Bamford had a rivalry which mainly involved lowkey insulting each other during lesson. This includes Ms Rogers referring to Mrs Bamford as "the Head of Art" and never by her real name, possibly afraid it may summon her, and Mrs Bamford saying "you may have had a certain teacher in past years who taught you to do this... well she taught you wrong."
(Wiping glue over everything in her arm's reach) "Sticky, sticky, sticky."
Ms R: That's not enough work! You can do better than that.
Student: But miss, my dad's computer broke.
Ms R: No excuse, you could have used the school computers! And... What are you doing?
Student: Polishing my shoes.
(Makes a point of mispronouncing names) "My dad was a Muslim! I know how to pronounce Muslim names." - This made her many enemies across the school.
"My daughter is 7 years old and she could have done something better than this! But then, her parents are two artists of course."