Ah that one.
She's using the forum attachment feature to host her images and it is possible that something happened when the image got uploaded and the location got messed up somehow in the forum storage.
One little boo boo in the address will cause the attachment to not load.
I don't know what might have happened the first time where she saw it and then it went away....I never saw it myself and there's no way that I can go back and see what may or may not have been the problem.
If we load the address and accidentally make one little minor change in that address....it won't load.
If we go in and edit a post that had an image in it and we accidentally do something that alters the address...like maybe even insert a space by accidentally having the mouse on the address and finger drags over the space bar.
I have problems with my laptop doing that when my hand or even clothing touches the touchpad on my lap top. I get some weird stuff happening that I don't realize is going on and I didn't mean to do it. I hate the touchpad for that reason and try to avoid its use whenever I can. My laptop won't let me just turn off the touchpad....I hate it. So I keep it covered as much as possible with a different separate keyboard and use a regular wireless mouse most of the time except when typing.