Irish girls

I am reading The Rebel of the School by LT Meade on my phone. This quote is for leedy, stellanova, gronya, daegaer, and jinxremoving.

"We are all pleased, and expect that she will be a great aquisition."
"Irish girls always are," said Mary. "They're so gay and full of life, and are so ridiculously witty."
[...]
"But do you know anything about her? The Irish are always so terribly poor."

(She's called Kathleen, and I'm sure we'll all be relieved to know that she isn't poor at all, her father has a castle and is never troubled on account of the Land League.)