Good, tinkerbell, if I was you, even if you weren't sure, I would ask your tutor to have your paper checked to see if the references were there, i,e paper clip or staple marks....then how to appeal the decision, with the fallback that you can re-submit.
As to Mum, she was probably shocked and taken back, so yes, she may have over-reacted and given that she has offered you a "jammy" peace offering, may I suggest that you consider giving her a little slack.
You only have one Mum and there are many more important things that you may need her for in the future, and vica versa......this is not worth losing steam on, on either side. Head down and see her in your jammies and a cocoa, cognac, wine whatever............
As to fabrics etc, not my scene, the art side is and just let loose with some acrylics and a large canvass and see what you come up with, having seen the pics...