358YK's journey

I recently applied for a training program position at a company I really want to work for. About two months ago, I went through several interviews for the same role but wasn't selected, even though I was a finalist. During the process, the manager mentioned that new openings would arise as team members complete the program at different paces, so I was encouraged to keep an eye out. Two weeks ago, the position I interviewed for became available again, and I submitted my application. I have the manager's email, as she was in regular contact with me throughout the interview process. I'm considering reaching out to her directly to express my interest in the role again. I'm unsure if this is a good idea or what exactly I should say. Any advice on how to approach this would be appreciated!