Probably a mentally ill woman who realized she is no longer a young girl with her whole life ahead of her and got triggered hard.
What word should we use now that we can't say m*ddle-aged without triggering people? Postwall? Old? Age-challenged? /jk Lol. In before you can't call 10 year olds kids since it makes 55 year old women feel old.
Calling it a slur is definitely a stretch, but offering a harsh reminder to someone that they're a bit "old" can understandably not go well. Not exactly a new thing either.