Wait. So is the mum a vampire too? Like converted... I'm confused

No, the mom is still human. She asked him to turn her into a vampire in order not to age so it wouldn't bother Chun Sam's dad to see her getting older, but few chapters before she said she was applying many cremes because she does grow older. :)

Aaaah. I missed that, I think. I kinda really hope he turns her though... They seem like such an adorable couple. The thought of them getting separated makes me sad