Loralai worked at the dragonfly inn, and didn't buy the house with Rory until Rory was roughly 7-8 I believe. So it's understandable she didn't know Luke extremely well before. In season 1 she wasn't even aware of him and Rachel's relationship. It sounds like Loralai didn't become active...
Very Eww. I no longer have access to a TV or time to watch when I'm in college, so I'm pretty much stuck to reading recaps for Gilmore Girls (but when ALIAS starts... I plan on working SOMETHING out...) as of now...