Sick Mother-in-Law

Post repotting report: most plants not doing too well. Emotionally coping with the stress.

My variegated sansevieria trifasciata has come been developing these dry holes randomly for a month now, eventually drying up blade after blade. It's supposed to be a hardy, low maintenance plant that's good at filtering indoor air, and that's the extent of the information on the web. Distraught about this and stopping it.