Several comments suggested she was in a rush to catch her flight to the afterlife.
More than S$48,000 in cash was seized, and five people have been charged in court.
Support for seniors is also a "big issue", he said.
A netizen said it was "scary" while others wondered whether anybody had reported him.
Both teenagers are Singaporean students.
Two others died jumping from the 8th floor onto a cushion prepared by fire fighters.
The rescue operation is ongoing.
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Netizens also noticed a Louis Vuitton coin pouch on her bag, intensifying the criticism about her preference for foreign brands.
The customer has vowed never to step foot in a Starbucks again.