someone hear me out plz …

this is gonna be a long talk.. so i've got this one friend, we knew each other like since 5th grade or smth, many things happened thru years, we only actually became friend at the end of 9th grade if i remember right (now we're in last year of high school, while you're reading this wish me good luck on me final exams after less than two weeks)
SO, now the thing is we got was TOO close the past two years like bro we live in an arabic islamic country yet she still accepted me when she knew about alot of things i do and think or believe or support that are against islam, i told her way TOO much about every fucking thing in my life, she kinda did the same, like i mean she made me feel like omg i finally got to live the feeling of having an actual real bsf, i was really grateful, BUT months ago we talked less, i mean bc of studying shit and all, yet for damn weeks i was always the one sending first, like ALWAYS, the one suggesting we hang out, like i was just doing all the effor for a long while, some things happened and i stopped, but like not intentionally, and wow time really flies by and half a year went by and she never reached out to me first, thru that i texted her twice, once to tell her to come take the book she rent me before all that happens since she passed by my neighbourhood on her way many times, she said yeah and she will come, a month went by and she didn't, her birthday came and i really didn't want to contragulate her bc i was so pissed, yet before the day ends i msged her a happy bday, she replied flatly and that was the last time we ever talked, four months went by, i got REAL sick three times thru that, my bday came, my sis got pregnant, what i'm trying to say that alot of kinda important things happened during that period and she never reached or checked up on me and the thing is i knew she was meeting with her other friends (we were in different classes), a month and more ago i officially gave up on her, actually smth happened in the country and she suddenly had the inspiration to start wearing the official islamic outfit and be a niqabi and all so i kinda guesses she probably preferred to lose me since she was trying to win God or smth idk i never knew what the fucking fuck that happened to us but anyway i almost forgot and never really thought about her or the whole thing again and gave up on the idea of real friends anymore (what hurts more that she once wrote me a letter and said smth like she hoped i prove her family wrong that reall friends don't exist and all, yet she the one that proved them right tbh)
AND NOW THE THING IS, half an hour ago she suddenly texted me while i was reading on here, like all of a sudden, without even an apology or justification to what the fuck got into her, like okay i get that we were besties and we don't need that but in my case that doesn't work when u literally parted for half a year, it's not that simple. She said hello and and that she misses me and shit. I'M REALLY CONFUSED AND DON'T KNOW what to reply, no it's more like i don't have the want to reply like but i hate being late on ppl it feels so silly to me but i really can't do that right now um if anyone can help me sort out my thoughts and feelings and tell me what to do plz i'd be thankful yall … ╥﹏╥