Im 12 and rlly rlly rlly confused about my best frind!?

ive been bestfriends with a girl for 7 years but this year she decided to be home skoold.also nxt year ... but its summer and we shud hang out more but i asked if she cud *** over tomorrow i said wat r u doin tomorrow she said goin to the creek nothing rlly she asked her mom and she said no.... a week ago she said can u *** to my swim race and a sleepover i said yes but the day befor the race/sleepover she said i dont feel like doin the race so u cant sleepove i thought ***** i sleep over anyway? she s acting very anti social and her mom has said no all this year wat shud i do ive never felt this way... im sooo sad im crying cuz i dont want our friendship 2 be over!! shes also very mature and we dont rlly tak bout anything while we txt. but she wudnt like NOT wanna be friends cuz i know her better than that