Feeding the baby doll

July 20, sunny My baby is about 20 months old and her name is Zhenzhen. I took my baby to the shopping mall after dinner. We went to a toy store that has many dolls for sale. "Sister, sister" she said to the baby doll gently. She likes this type of toys very much. She would like to talk with them, even though she can only say few words.
This baby doll was a sample, so I took it to her to play for a minute. She acted like an adult. She took the baby doll in one hand and the bottle in the other hand and she would feed the baby doll from time to time, just like What I do. After a few minutes, I told to her, "the sister needs to sleep now, let's put it here, OK?" "No!" She always says the word "no" to express her unwillingness. Ten minutes later, I took away the baby doll from her unexpectedly. and She was still didn't want to return it so she cried. Afterward, I took her to another store. 晚饭后，我带我女儿去商场。我们来到一家玩具店，店里卖许多玩具娃娃。 她看到一个玩具宝宝，很温柔地对她说：“妹妹，妹妹.” 她特别喜欢这类玩具，看到玩具宝宝，都会和他们聊天。 这是一个试用品，我把玩具宝宝递给她。蓁蓁一只手抱着她，一只手拿着玩具宝宝的水杯。她时不时地给她喝水，像个小大人一样。 过了一会儿，我对她说：“妹妹需要睡觉了，我们把妹妹放在这里睡觉，好吗？” “不要。” 她经常说“不要”表达她的不愿意。 过了十分钟后，趁她不注意，我把玩具宝宝放回去，她还很不情愿，哭哭啼啼，我就把她抱到其他地方了。

I remember when my daughter was 20 months old. It's a fun age. Very nice job on your essay. 你写英文写得很好。Most of it is quite good. I just changed a few things to hopefully make it sound more natural. I'm not sure what you mean by "July 20, sunny". The rest of that sentence is good. Thanks for writing it again in 汉子. Since I'm studying 中文 it helps me to see how to express these thoughts in your language. 加油！