I don't think the caning is a harsh one,i think just a
light caning with clothing on,so should not be painful.
http://www.singaporebikes.com/forums/archive/index.php/t-220635.html
Quoted : The judge said in the New Straits Times report that the
cane to be used on the convicted pair would be not more than 1.22
metres (four feet) long and 1.25 centimetres (half an inch) thick,
and that the offenders would be allowed to wear
their clothes.
You are right about her being allowed to wear her clothes, but
it is still going to be painful either way.