"She did not think of [further] ideas [, perhaps being unable to]"

Hmmm. Isn't "further" somewhat related to space or distance? And in any case, it doesn't convey the same meaning as "she ran out of ideas", which is quite definitive -- we're not unsure, we know there are no more ideas left in her mind.

I'm sure we all agree (even Julia and Maggie, it would seem) it's not practical or clearer to talk like this.