In the immediate year after JFK's death, Jackie experienced such a profound depression and a severe crisis of her Catholic faith that those closest to her feared she may have seriously contemplated suicide during that time. And, according to her spiritual advisor at that time, Father Richard McSorley, these concerns were well justified, as Jackie not only made several specific mentions of it, but routinely posed questions to him, in that regard. during his time with her. In fact, Father McSorley thought her ideation so strong, and her questions so pointedly persistent, that he actually prepared a formal paper as to the Catholic Church's stance on the subject, and presented it to Mrs. Kennedy, once complete. The urge dissipated over the coming years, and while the clouds of depression may have greatly diminished, they never seemed to have perfectly cleared for the rest of her life, and quite understandably so.

As to Father McSorleys interaction with Jackie in the immediate aftermath of the assassination, please see Thomas Maier's book, "The Kennedys, Emerald Kings", which includes excerpts of his interview with the (then) retired priest.

I have a followup question. What were the prevailing opinions of the time regarding her marriage to Ari Onassis? I've never really gotten a sense of how the marriage was viewed by the media or public.