Questions: Flirting

I told her i like her... but she seemed not interested but her eyes and body language and the vibe / tension is not like friends. I get signs her feelings changed lately. her eyes sparkle and smile when she sees me in hallway when she dont expect me. when she is among her gal frnz and when she see me enter cafeteria she stops smiling and looking down at food not left or right, She stares at me from far. but when i am near. she treats as i am invisible. she knows if she look at me and smile i would certainly go frwd talk to her evn if she is with her frnz. most times when i greet her. she smiles and look down. i would move on after wishing her hi. when i subtly teased her she asks whats hpnd to u today (with chuckles)? SInce the first time i teased her and made her laugh. She is fucking outgoing and flirty with other buddy frnz both boys and gals. But with me... i only get her shyness and smile not laughning with teeths shown (she was with me before she knew my feelings). She is very picky on words she say to me. i believe she dont want to say or screwup saying smthng bad. she invited me to group lunch and all. Does she like me?