She should refrain from speaking or posting criticism. Foster goodwill, spread good values. A congratulations note and say Keep up the good work goes a very long way. At her age or our age, there is nothing to gain by posting what she did. Did she discuss it with LHL or her siblings before posting?
For an individual who probably is paid a million dollars or more a year by Temasek, and without a good I investment record, she should just keep quiet and a low profile.