The pope KNEW the name of a traditional Slovakian desert, its a secret handshake of understanding and personal connection between just the two of them.  It wasn't wasted on her... she got it's comfort if everyone else missed it. She laughed with delight!
I've done the same in my travels when I spot a 'homie' in the mix. The pope touched her heart! When was the last time someone spoke to her a word of her birthplace... 
She glowed in the moment... so very glad she had ears to hear.