Removing the headphone post could be as simple as using a very fine tweezers or pics if the post is accessible!
If not, the next two options should be easy enough for either of you to do at home.
A) Bond something to the the headphone post with a small amount of super glue gel, then pull it out. Too much glue or shaky hands might make things worse though…
B) Press a rigid sleeve over and around the headphone post, just enough to get a grip on it, then remove. There is a video onYoutube where a piece of tubing from a can of compressed air was used..
You can do it!