mentioning her in what way? Are they trying to make her sound good, and have you get to know her? If so, that is good and means there is potential she likes you.
It doesn't really mean anything more than the fact that you both have busybody coworkers. Just ignore them.
Her co-workers are trying to matchmake, but that doesn't mean that SHE is actually interested.
They may think she is only playing coy, but that's not necessarily true. Don't make any big assumptions just from the way they bring her name up. They may think you'd be an ideal couple..but you'll only be as ideal as she will allow you to be, and if she is ignoring you, either she's shy, or she's REALLY not interested.
And if she's your age, she's beyond the age of being shy, most likely...