Tisvetaia sends one of her manifested forms to go investigating a town that's just skirting the definition of 'near' to her domain. She's heard something about a sickness in the area, she'd like to see if there's any stock to that claim, and if there is, how best to act upon this. They're not her people, but they are people. They matter, even if they don't worship her.
And then the ground ceases to be under her. It's not clear how this happens, and since she doesn't have any part of herself where she used to be anymore, she can't immediately figure it out. With a fraction of her attention, she shifts the wings of one of her bird manifestations, and changes course to investigate. This complete, she notes that her human manifestation is busy plummeting out of the sky. Well. That's a bit annoying. There's not all that much she can do to soften the landing; if she'd planned for this, she could perhaps transport a glider or parachute or something to this body from elsewhere in time. She had not planned for this, so there is no glider or parachute to transport. Making one in the time it'll take to fall isn't feasible. (Elsewhere, because it occurred to her, she starts making something like a parachute, in case this happens again.)
With one of her many sets of eyes, she looks at the rapidly approaching ground critically. This is not going to be a nice landing. She has never sent a manifestation off a cliff before, so she can't say for sure, but this definitely looks like the sort of fall distance that would end up splattering her all over the ground. How annoying. Hopefully enough of her manifestation will be salvageable that she won't just have to start over entirely in making it, but she won't know until she hits the ground.
Speaking of:
There is a crunch, and a modest crater. Her landing isn't painful, but that's only because she doesn't need to feel pain. There is quite a lot of damage, both to her form and to the area that was unfortunate enough to catch a falling volcano goddess. In the many places where her body broke against the ground, she oozes lava. She smells burning sulfur and notes that she can twitch at least one limb, before she closes that pair of eyes and gets to inspecting the damage. It's bad. Not as bad as it could have been, better than remaking the body entirely, but: pretty bad. If she were not a goddess, this sort of thing would almost certainly have killed her. As it is, she's a goddess, and this is just a bit annoying and inconvenient. She sighs to herself in a quiet section of her domain, and she sets about repairing the damage.
To outside viewers, there is a flaming dead woman that just fell out of the sky, now smeared all over a burning crater.