Future Lucy's right hand? In the manga, we see that future Lucy has no longer her right arm, but no context is given about how she lost it.

Does it has anything to do with Natsu of that timeline to be killed by a dragon ? How did she lose her right arm ?
In the episode where we see Fiore being destroyed and Lucy on the ground, we can clearly see that Lucy lost her right arm as the kingdom was being destroyed right before Natsu came to save her.

I believe it was due to the destruction of the city, something must have crushed her right arm and she had no other choice but to cut it off since she was alone.