It is directly because of the Bulgarian issue that blood transfusions are no longer a difellowshipping issue. Since the Bugarian compromise a person who has a transfusion automatically disassociates themselves. A minor technicality that allows (somewhat illogically) the WTS to say their members have freedom of choice in the blood issue.
Seeking help - do the changes offend your wife. For instance they used to be adamant fractions were wrong, now they are not:
"If you have reason to believe that a certain product contains blood or a blood fraction…if the label says that certain tablets contain hemoglobin…this is from blood...a Christian knows, without asking, that he should avoid such a preparation. Watchtower 1961 November 1 p.669
“Whether whole or fractional, one's own or someone else's, transfused or injected, it is wrong.” Watchtower 1961 Sep. 15 p.559
NOW - "...when it comes to fractions of any of the primary components, each Christian, after careful and prayerful meditation, must conscientiously decide for himself." Watchtower 2000 June 15 pp.29-31
Also look at the section on Pikuach Nefesh at http://www.jwfacts.com/index_files/blooddoctrine.htm Jesus showed that saving a life is more important that adhering to the Mosaic Law. That article also goes through the changes regarding vaccinations, transplants and blood, maybe your wife will be shocked to see these is not already aware of them.
I think this is an important question "Since blood fractions are now allowed, who is responsible for the JWs that died refusing blood fractions?"