Dream About Extra Chair 4th Floor Classroom Confusion

After class ended from the previous dream, I went to a different classroom to reorganize the chairs with them because the class I was in earlier had an extra chair. So when I went into the classroom, it looked a lot like my old 7th grade ELA room but it was on the 4th floor. When I came into the classroom a different old lady who was the teacher asked me “Who are you? Did you come here to work in your passages? Or class work?” So then I told her “I have an extra chair that you guys might need since there’s a spot where the desk doesn’t have a chair.” She replied back “Well just stay there, I’ll be there in a minute.” I just waited and then told her “I can’t stay for long I have speech to go to.” Then she said “Just be patient and wait a few minutes don’t leave yet.” I tried to move and put the chair back but she just kept saying “Wait! Just stay there please, DONT leave yet.” At this point I was getting a little frustrated since I was supposed to go somewhere for lunch like a usually do every week, but this old lady kept making me stay in her classroom. I turned to the right to see what the classroom was watching, and it showed something that looked like an airplane. And the teacher said “that’s what we are currently learning about it’s so interesting to see how airplanes work.” I asked her “When can I leave.” Then she said “Okay fine, put the chair here.” I put the chair with the empty desk and she told me “Alright you can leave now.” FINALLY I WAS ABLE TO LEAVE. I opened the door in relief and hurried down the stairs from the fourth floor to walk all the way down to the 1st floor for counseling. While I was walking downstairs I was confused seeing Cristy walk down the stairs with me as well. I wonder why she’s walking downstairs with me aswell? Is she coming to counseling with me? Or is it something else? So then when I finally reached the counselings office Mr Z greeted me by saying “Hey! What’s up guys?” I turned around behind me and saw CRISTY WAS WITH ME AS WELL. I was so confused “Hey Cristy, what day is it?” She replied “Today is Wednesday.” I told her “I have counseling every Wednesdays during lunch..” then she replied “Yeah I do too!” I was so shocked. “WHAT!? WAIT YOU TOO!?” She said “Yeah!! I have counseling now with you.” I was still confused but when I turned towards the right, I saw my sisters stuff.. I asked “Did Jo invite you here? How come Jo is here this is my counseling session?” Mr Z replied “Yes Jo did invite her here she just isn’t in the room right now.” I was like “ohh..”