have someone eating out of your hand idiom informal
牵着…的鼻子走；使…百依百顺；将…治得服服帖帖
to easily make someone do or think what you want
Within two minutes of walking into the classroom, she had the kids eating out of her hand. 她走进教室不到两分钟，就把这帮孩子治得服服帖帖的。