A mother/siblings/family member wouldn't just throw away your things.
* laughing in experience of it *
Had to hide things I bought with my own money or in best case scenario, give detailed information if I had something borrowed from/given.
Hope Tomiko wouldn't misunderstand what Kanae did, she is an otaku and 1st issue is a precious gem... but it isn't that kind of story... brace for impact...
What's worse, the money Kanae used to buy the manga was most likely from her literally
working her ass off.