Her journey was worthwhile the stressful worry.
We would say
worth the worry
worth the stress
worth the stress and worry
Although the last is somewhat redundant because in the vulgar tongue one implies the other
Her worrisome and stressful journey was worthwhile
Let us resurrect "vulgar" in this context
This is the place to post questions and discussions on usage and style. The members of the Wordwizard Clubhouse will also often be able to help you to formulate that difficult letter.
End of topic.