It isn’t unusual addressing strangers with familial greetings in certain parts of Southeast Asia. This is especially true when greeting an elderly in an informal setting. No matter the language or manner of speaking, the concept remains.
This character is what we typically address as ‘Makcik’; it means ‘Aunty’ in Malay. Her ensemble is also notably a traditional Malay outfit. Due to modernisation, such attires are now rarely worn as everyday apparels.