On the Facebook invitation, the girl said she didn't have enough time to invite everyone. ... She also said that the event was going to be an "open house" party as long as it didn't "get out of hand". She told Fairfax that she did this because only two people showed up to the last party she held.
Got that? She 'didn't have enough time' to invite everyone, and hadn't figured out even after her previous experience that perhaps people might rock up if you gave them some slight indication that you cared whether they did or not. Like, being organised enough to invite them individually and personally.
Perhaps even -- I know this is a radical idea -- in writing of some kind.
Possibly even in joined-up writing. Of the kind you do with a pen. A pen is a ... Oh, never mind.
Also, you kids get off my lawn.