girlfriend is ignoring me, she is busy with friends always , what should i do ?

she went on a tour with strangers and she became friends with them and they are from good backgrounds , and she spoke about a guy trying to flirt with her and he is charming , she evnetually stopped texting , and stopped responding to calls , and started ignoring me , when i ask her directly whats her problem she says , give me my space , why cant you understand i am being busy . you need to broaden your thoughts she says ,and wen she is in close by town and i asked her i want to visit her , she said big nooo and said its not at all possible , i know its possible and ive met her initially in her tour . now she is acting differently and trying to avoid me . is it my assumption about her , or is she really ignoring me . should i be calm , i explained her its hurting that you are ignoring me , pls dont ignore , and i explained her to talk for atleast a minute a day atleast carry coutesy talks , but she ignored that request too and laughs at me that i am being stupid ?