Learn English – Troubles with black american slang – what does “yellow bones” mean

The penny is the coin, and cent refers to how much the penny is worth.

If I told you I had 15 cents, that could be three nickels, or a dime and five pennies, or two nickels and five pennies (there are other possible combinations as well).

Since she already mentioned the dime, it makes sense that she also said "pennies" instead of "cents." I suppose she might have said:

I have a dime plus four more cents

That would be grammatical, but usually we speak of coins with coins and cents with cents.

Had you asked me the same question, and I had the same amount of money, I'd probably say either of these:

I have a dime and four pennies.

or

I only have fourteen cents.

I might lean toward the first wording if you asked me about currency:

Do you have a quarter?
No, I only have a dime and four pennies.

but the second if you asked me about money:

How much money do you have?
On me? Only fourteen cents.

One other possibility, if I had to count my money in order to answer your question (in other words, I knew I has some coins in my pocket, but didn't remember what they were), then I might say it like she did:

How much money do you have?
On me? Let me see. [pulls five coins from pocket] I've got a dime.... and four pennies.

I'd assume you could do the math as easily as I could, so I wouldn't bother to state the sum.

UPDATE

February 01, 2018, the OED has recently added the word swag in its dictionary. Oxford Online Dictionaries reports

A new entry has been added for swag, derived from swagger, and used in slang to denote ‘bold self-assurance in style or manner’, or ‘an air of great self-confidence or superiority’. The OED’s first citation for this particular sense comes from the track ‘December 4th’ on Jay-Z’s The Black Album (2003): ‘My self-esteem went through the roof, man. I got my swag.’ This is the fifth OED citation attributed to Jay-Z.

A glossarial example of the word from the previous year, in a self-described dictionary of hip-hop terminology, defined swag as simply ‘walk’.

ORIGINAL POST

(October 12, 2016)

“Obama displayed similar swag and bluster …”

In his sixth State of the Union Address, President Obama said:

_{We’re upholding the principle that bigger nations can’t bully the small — by opposing Russian aggression, supporting Ukraine’s democracy and reassuring our NATO allies. Last year, as we were doing the hard work of imposing sanctions along with our allies, some suggested that Mr. Putin’s aggression was a masterful display of strategy and strength. Well, today, it is America that stands strong and united with our allies, while Russia is isolated, with its economy in tatters. That’s how America leads — not with bluster, but with persistent, steady resolve (Applause).
^{From whitehouse.gov, January 20, 2015}}

The swag appears to be a clipped form of swagger, which the article accuses President Obama of doing. In the speech, the ‘swag’ refers to America standing strong, unafraid of Russia, and determined to enforce sanctions. The bluster, according to the author, is Obama's words whose tone was possibly concealing a threat to Putin. The fact that Obama asserted America did not engage in bluster, was telling the audience that America was not afraid of taking further action if necessary.

bluster
talk intended to seem important or threatening but which is not taken
seriously and has little effect

swagger
to walk, esp. with a swinging movement, in a way that
shows that you are confident and think you are important
_{^{Cambridge Dictionary}}