I think if you want this angle to work you would, at the very least, have to show smoldering hints of Æther still residing in Jane before she comes anywhere near Mjolnir. I'm not sure if you have already, I might have overlooked it but, if you haven't, I strongly suggest using her earlier appearances in the film to suggest the Æther might be responsible for her cancer.
If you could, I'd also change the nature of how you show it. Instead of showing it as some form of red electricity, even when she comes near Mjolnir, I'd instead try to show it as the residual Æther flowing through her veins. You could have it come across her hands and forearms a few times every scene she's in. Finally, when she comes close to Mjolnir, we could see the Æther flowing through her arm and hand, and then we see Mjolnir reacting to it (with its own, original colour lightning). That would give off a stronger sense of Mjolnir trying to save her. The clip you have now makes it seem as if the Æther actually imposes itself on Mjolnir and fixes it. There's no point in it doing that since the Æther is anything but benevolent.