It's unbearable for a child to spend time alone even for an hour (too late). When a child waits anxiously for her parents' coming back home, she considers them to be cruel/ unkind/insensitive/ unsympathetic. The kid thinks they are deliberately delaying so as to make her furious/annoyed/irritated. When I was a child my parents used to leave me alone with my sister at home and go shopping or meeting relatives. Remaining at home without (Being away) parents, I felt insecure. Sometimes, some (the) evil thoughts cropped up into my mind (came). In spite of my sister being with me, I was not able to stop thinking of an accident happening to my parents (which might have). This poor child then started singing while crying. After an hour her parents came back home with a pockets of fruit, ice-cream and chocolates. The food was sweet but it could not make good on my bitter waiting (have make up).
Delete words underlined in brackets.
Use optional word in red which may appeal to you.
make good on is an idiomwhich is more appropriate than the phrasal verb make up