Shavri refused to marry Randale because it would prevent any chance for him to make an alliance marriage, and because she was terrified at the prospect of having to rule Valdemar-- which she would need to do if she survived him as wife and consort.
Shavri and the others who knew went to great lengths to keep Randale's sterility and the truth of Jisa's paternity a secret, and the rest of Valdemar thought Jisa was Randale's daughter.
Shavri could not, however, keep Randale's wasting illness a secret forever. She feared ruling so much that it threw her into emotional turmoil when Jisa wed Randale's heir, Treven. She became reconciled to the match in the end, but could never understand Jisa's willingness to accept the responsibility of ruling Valdemar.
As Randale's end drew nearer, Shavri went against all recommendations and opened all her Healing channels, giving him everything she could of her strength while aware that it would mean her death when he finally succumbed.
Details of her internship are not given.