[General] She is happy for her long-lived relatives

[englishhobby]

Can the word 'long-lived' refer to someone who is still alive?
Does the following sentence sound natural (if the girl's relatives are srtill living and they are 90 or more years old)?
She is happy for her long-lived relatives.

If not, how can we express the same idea? Does She is happy for her old-age relatives sound better?

 

[emsr2d2]

... her elderly relatives.

What do you mean by "She is happy for ..."? Do you just mean that she's happy that they're still alive? If so, "happy for" doesn't really work. You would need something like "She is grateful for the fact that some of her relatives are over 90 [years old]".

 

[englishhobby]

... her elderly relatives.

What do you mean by "She is happy for ..."? Do you just mean that she's happy that they're still alive? If so, "happy for" doesn't really work. You would need something like "She is grateful for the fact that some of her relatives are over 90 [years old]".

And if it is clear from the context, can't I use 'happy for'? For example: Some of her relatives are over 90 [years old]. She is happy for them. (Or we only can write 'happy for this/this fact'?)

 

[Charlie Bernstein]

And if it is clear from the context, can't I use 'happy for'?

Yes.

For example, some of her relatives are over ninety [STRIKE][years old][/STRIKE]. She is happy for them. (Orcanwe only [STRIKE]can[/STRIKE] write 'happy for this[STRIKE]/this fact[/STRIKE]'?)

Yes, you can be happy for old relatives.