Hey @megh02170, at the risk of overwhelming you, I have a number of places to link you to on this website.

I know you said your recovery ruled out ARDS, but I thought you might still appreciate the stories shared in this discussion:
- ARDS Support: my story and looking to help other survivors https://connect.mayoclinic.org/discussion/ards-support-my-story-and-looking-to-help-other-survivors/

PICS-F (post-intensive care-family) is a real thing. Family members are affected by ICU stays as well. @andreab explains in this blog and discussion:
- Breaking it Down: Post Intensive Care Syndrome and The Family https://connect.mayoclinic.org/blog/pics/newsfeed-post/breaking-it-down-post-intensive-care-syndrome-and-the-family/

- The ICU experience from a loved one's perspective https://connect.mayoclinic.org/discussion/the-icu-experience-from-a-loved-ones-perspective/

I agree with the helpful tips that @vlbondon offered. If talking it out isn't for you, you might find journaling helpful:
- ICU diaries - how do they help? https://connect.mayoclinic.org/blog/pics/newsfeed-post/around-one-third-icu-survivors-get-ptsd-but-diaries-offer-hope-for-recovery/

I know @rosemarya really appreciated her husband's help with filling in the gaps when she was ready to piece things back together. Perhaps, working on an ICU diary together with your mom could be beneficial to both of you?