so there is this girl performing at my work place ( casino ). she and her twin sister has been practicing for past few weeks for the final show. I only noticed her staring at me 3 days ago and we started to talk. I have talked to her like 4 times in 3 days and I have a feeling that she likes me and want me to talk to her. and I think I also kinda like her. idk is it just all in my mind or is it really happening. so anyway, tomorrow is their final show starting at 7 45pm but the thing is my shift will end at 8pm so I probably won't be able to watch the whole show but just meet her briefly. I don't know what to do. Probably, after the show i wont ever she her again. Should I just ask her if her performance are on social medias like insta and then ask for that insta. but I think how would she know I like her. i will probably get her insta and never message her. should I just directly express my interest and ask her to go out with me?

help me guys!! I have never asked a girl out. so this is very hard for me.