Question

indirect form of speech the we said," May her soul rest in peace!"

Answer 1

we exclaimed that Might her soul rest in peace.

Answer 2

Basically, these kind of sentences show the condolences of the speaker. So, we can assume that it is said in full of sorrow.

Tips :

1) Change the present tense into simple past.

2) Convert the nouns into pronouns.

3) Remove the inverted commas and join the sentence by using conjunction ' that '

Answer:

We exclaimed in sorrow that might her soul rest in peace.