My mom is safe in heaven ?

im 14 and have a 6 year old sister and my mom had cancer negative which dosent take any drugs.. so 3 years ,later she was getting water in her lungs and couldnt breath. so my father took her to the hosp[ital everything went by so fast and i know i was being a brat when she was home.. i was angry for no reason.. i wish i could change it because i wishe di couldve hugged her more knowing this was it. they took her to the hospital the next day when i visited her her eyes were open and whispering to me " i will always be in ur heart and mine" (my sis was @ home) well i wished my sis could have gone with me because tht was the last time i talked to her. the next day we got a phone call saying my aunt is going top pick us up to go see mamma for the last time. when we got there she was like still not saying a word or moving.. just when my sister huged her and left i stayed there. thn moments later her heart beat was going down from 105 t0 80 my dad tld me it was going down just when he said that it went blank.. i cried like i did in my entire life more whn they took her off the cords.. im just wondering does she know i didnt mean the stuff i said the awfull things i regret sayng to her.. and where is she know with the angels ? does she know wat im thinks and wanting to talk to her? is she safe.. i wish i could see her agian..and when am i going to see my mom :'