I attended a Christmas gathering at the weekend at a friend’s house with my husband and 5yo twins. My friend of approx. 14 years, Mrs X, was also there with her husband and two children (age 3 and 6 months). My parents collected my children at 4pm so the adults could stay and enjoy some drinks. Mrs X and family left at the same time as my parents. At 6pm my mum messaged to say she thought she’d seen nits in one of my children’s hair (I’d had no prior inkling they may have them – there was no scratching and we’d had no warning from school) - I told those still at the party and suggested they check their children’s hair for nits just in case – no one seemed particularly fazed. Nits were confirmed by the pharmacist late morning the next day. I messaged Mrs X around lunchtime to apologise for the inconvenience and to suggest she check her children’s hair. Admittedly I added a screenshot from the nits episode of motherland to make it more lighthearted. Mrs X responded with a foul mouthed expletive ridden tirade (I lost count of how many times she used the F word!) accusing me of putting her family at risk and having no regard for the welfare of her family by waiting until lunchtime the next day to inform her (apparently she’d seen relatives that morning who, in her eyes, are now also at significant risk when they needn’t have been had I messaged the night before). I should add that her kids do not have any specific vulnerabilities. I apologised (numerous times) for the delay in letting her know and even offered to pay for her kids’ treatment if it turned out they had them. Absolutely nothing would placate her and she continued the ranting well into the evening focusing on my lack of regard/consideration for her family – I eventually had to block her just to bring an end to the onslaught. I’ve never been spoken to like that before and frankly never want to lay eyes on her again. My friends/family have seen her messages and think they’re appalling and completely unwarranted however I’m conscious that, as my friends, there will be a degree of bias. Am I being unreasonable here?