Is she interested or just being friendly for work? should i ask her or what?plz help get good points!?

I went to get a facial and NO i'm not gay... ..u get a mage...well anyways the one who did my facial asked how old r u? then i said 20 she was like like me...I'm 20 ..I was like ur 20...she said yeah...she was like so where do you go to school? i said a school of course...then asked me my major later on ..I mentioned that I am really ticklish in the neck so if i laugh yeah...she was like laughing then yeah i just kept holding the laugh she found it funny ....she said ur funny...I did say omg because she had to rub the neck alot...so i would just be holding it and she kept saying i was funny like 4, 5 times......when she got behind my neck and she was like thats not the neck area with a laugh....(but i really am ticklish like alot of places...it was a behind the neck) anyways it got silent and i woud look up at her since i am laying in a bed while shes doing my facial and she would smile....I think it could of have been blushing and she even said oh I its just torture for u huh?