In order for her to have surgery - any surgery, let alone such a dramatic surgery - didn't she or her husband (if she was unable) have to sign INFORMED consent??? She says she went in to give birth and woke up missing her arms and legs - who consented to that?
As for the hospital withholding info on the cause of the infection (assuming it was infection) my first thought would be that it is a way to cover their butts, liability-wise. The longer they block the information, the longer time they go before a serious suit is pressed (and the more time they have to cover their butt for it).
No matter what else - it's an awful awful thing to have happen <shudder>.