Me time can be anything she would like to have done if the baby wasn't around.
Other than a massage/spa/facial/manicure, she could also just find a nice cafe and chill out for the entire day.
List of 20 best cafes in Singapore
http://www.burpple.com/list/476092/20-best-cafes-2015
Why don't you ask her what she would want to do if she had the entire day to herself without the baby?
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