Pouring molten aluminum over logs = Neat Furniture  

It's art, not furniture.
I like her chess set.

Usually these things are...
Usually these things are subjective, but she refers to them as furniture herself, so theres not much interpretation to do here.

I like some of the
tables. The heavier, wider ones.
The rocking horse---not so much. Unless there's a hand hold at the rear that doesn't show in this photo, it would be difficult for a parent to pick it up and move it. It also looks like it would be rather heavy--also impractical for moving it.

Practical issues.
Bonding a dimensionally dynamic organic material to a rigid inorganic structure in such a way does not bode well for long-term stability in a non-climate-controlled environment.
Aesthetically, it's interesting in concept, but I'm not sure I'd want one in my house.

"she refers to them as furniture herself, so theres not much interpretation to do here"
I'm not so sure. I don't have a problem with defining ART that way -- "He says it's art, so it is" -- but that's only because I'm willing to accept that art can be limitlessly bad.
Furniture, though, has to meet certain subjective requirements. A bent spoon isn't a BAD sofa; it's a non-sofa.

Hmmm
It looks more like furniture to me than a lot of other contemporary designs being passed off as furniture.
At least it's not an old board some old horny dude made in his garage.

Hey !
Watch what you say about us old horny-board dudes . . . !