DON'T WORRY FANS SHE'LL BE BACK TO NORMAL
WE WOULDN'T WANT TO INFLICT THE SLIGHTEST AMOUNT OF SUSPENSE OR SURPRISE UPON YOU
*shrugs* she's been in robot form for so long maybe nobody has thought that realistically she could return to normal. In which case, this was a taster of sorts, a teaser to get people excited.
You know, it took me a while to realize what exactly was so depressing about this statement, but I think I've got it.
For all these characters, roboticization is the quintessential Fate Worse Than Death. They've been fighting against this madman whose goal is to enslave the entire population, and when he gets you he turns you against your friends, while you get to watch. It's a vampire/zombie/pod person mechanic.
So one character--a politically and socially central one who has been on and off the love interest of the chief protagonist--subjects herself to this Fate Worse Than Death to save the rest of the planet, and now her friends have to combat her, knowing that every blow they strike is a blow against their imprisoned friend.
And this whole situation has become SO BORING that it's potentially an interesting, buzz-building move to just up and tell the readership "yeah, she's going to escape and everything will be okay again," because the readers will be more excited about a possible change in a character's outfit than worried about whether one of them will be a slave forever, die a slave, kill her friends, etc.
I don't care who you are, that's just some bad, bad writing.