RBBM
If the husband was not told details about her medical condition, that would be because Crystal herself did not want those shared with him. Anytime you enter the hospital, you are given forms to sign first up, stating with whom that medical info can be shared with. You must write your spouse's name down (or any other person, such as your family doctor) for your info to be shared, for each event, each admission. So I believe it can be safely assumed she did not want that info shared with him.
I find the husband's behavior strange (and strangely irritable), personally. IMO he offers more far more information or description than necessary - eg. "our happy home"..."she lost hers" [re the new wedding ring he wants to buy her though they are living on plasma donations] ..."the only thing my wife could think of was to get home to her children"...etc. Some of which appears to be contrary to what the situation would suggest (along with reported facts, such as her sitting on a sidewalk but not trying to contact police.) JMO, but to me this behavior comes across as somewhat manipulative and controlling.
(I also get a Papini vibe from this incident.)