When western speaks Bahasa Malaysia

As related to the title above, I'm going to tell one of my work experiences here. Last week, I've had done my business deal with a western customer. She is a granny and has blonde hair and blue eyes, and I guess she is from US because her scent sounds like American. After that.......

The conversation between us:

Granny: Ini battery baru?

Me: thinking* baru? Which english word is that?

Granny: Baru, baru, new battery?

Me: Owh, yes, of course!

Then I treat her a glass of mineral water.

Me: Ma'am, this is for you.

Granny: Bagus, I'm in thirsty, Terima Kasih!

Me: Erm, you speak Malay?

Granny: No, is just Bahasa Indonesia!

Me: (=.='') speechless*

Yes, the granny of course can speaks Bahasa Indonesia in Malaysia. Likewise, British can also use their British accent in US, nothing wrongs, both of the countries speak the same language. Yet, I personally think that it actually is a shame on Malaysia because Bahasa Malaysia does not impress the foreigners well like Bahasa Indonesia does.