will taking a semester off college for personal reasons jeopardize my internship offer/future job?

I worked really hard last year and last semester and landed an internship at a good (GS/MS/JPM) place. along the way, a lot of alumni at my college have helped me. I am also a sophomore, and so with this internship i was told if i don't suck ill have a return offer for my junior summer and then a full time offer senior year.

however, I'm really struggling and I've lost all motivation for school and everything else. i don't even care about this internship anymore, in the way i cared about it before. the only reason i still will do it is because i don't want to let my parents down.

i live on campus, in a really rural area that is very cold and different from my hometown and places (city environments) that i like. i hate the campus. i hate the food. I'm the only person from my country at this college, and i feel so, so lonely. i am on full financial aid so i cannot transfer to another college in the USA that is of the same calibre of my current college. plus if alumni who helped me realized i transferred they may not act favorably towards me and affect my chances of a return offer.

i have acquaintances here, but no friends. i don't even really like my acquaintances. actually i don't like them at all. i miss my friends back home so much. i have been feeling suicidal for a long time. I'm too ashamed to tell anyone. when i dared to tell one of my acquaintances, that i felt like i couldn't control myself and i might jump out the dorm window and end it all they texted me 'then jump.' i feel so alone. it's been getting a lot worse recently. i think about it all the time and its very frightening, as sometimes you just feel crazy and don't know what you may do. but the last straw is this: i recently started hearing these voices. they would criticize me, tell me to do crazy things. but the voices are not the worst. i see these things, like hands crawling everywhere and diseased bloody flesh and monster's faces in the mirror beside me. its gotten so bad i can't even go to the bathroom at night. I'm scared to wash my face because i don't want to close my eyes. I'm not crazy, but i don't know what's wrong with me.

i realize that this is not a good way to live. but i feel like i can't go back home or ill be a failure. i can't take any time off college or ill lose my internship, and graduate late and then may lose my job offer. I've already done the hard yards: gotten a internship, which will hopefully lead to a job, at a great bank. i tell myself, lots of people try so hard and don't get it so stop complaining. but I'm so unhappy. I'm in a prison built for me and me alone. i can't leave this school. there is no way out. but at this point i care less and less. if i take a semester off, to rest and maybe try think of something else, will my internship for this summer get revoked? I'm sure they don't want people struggling with issues working there. and if i do take time off, then ill graduate later by a semester. will that jeopardize my job offer? since i would miss the training period etc other analysts are going through.

thank you for your help.