If she invited you out during holidays (when?) then she's either playing you or interested.
Do you share any common interests? When my husband & I were dating, he slyly got some symphony tix from his grandmother, said he needed someone to go who wouldn't be totally bored.
It was transparent as hell, but it was benign. I said yes. It was a foot in the door for him.
You need to get your foot in the door somehow. If things go sideways b/c she has another interest, then you can retreat into 'friendship, tho at that point I'd suggest you date elsewhere.
Good luck.
Second thoughts can generally be amended with judicious action; injudicious actions can seldom be recovered with second thoughts.
--Cyteen by C.J.Cherryh