Including the ones that say all of YOUR Catholic family will likely be killed by a vengeful God at Armaggedon for not worshipping the "True God."
Actually the watchtower says your catholic family will die in a holy war fighting the beast of revalation. Which may or may not be comforting to you.
I am telling you the truth. There is a JW generation gap. The org is falling apart. So your best bet is to know her. You have to know where she stands. If she has gone throught this much trouble she may be okay. THe problem is there is a shortage of males in the JW religion. So she is forced to marry a non jw if she does not want to wait for a married JW to divorce.
You are a catholic so you dont have much of a problem understanding a religion where a group of old men declare something a sin regardless of what your educated oppion is. Look at John Kerry.
Since you are a male the watchtower will tell your JW wife she must prettymuch do everything you say to provide a good witness. The problem is this wears thin. It is more of a gimmick you soften you to become a jw. So for 2 or 3 years you may think this is the best marriage in the world. Until she starts complaining. Then she may freeze you out. She may stop having sex with you to persuade you. On the positive note the elders will order her to have sex with you or make her feel guilty for not having sex with you.
This can go etheir way. The inlaws are your only real problem. Many parents want a church wedding. They will probally be denied that if she marries you. So they may feel bitter about that. They may be concerned you two are having sex. You need to have a bible study with a critical eye. You need to learn about JWs from JWs. It is a parochial religion. Not because other people are lieing, but because you need to see the personal view point of the JWs in your area and their reaction to you. Some areas are more liberal than others. You will find many ex-catholics in JWs so that can help you or hurt you.
It may be less effort for you to just break explaining to her you don't want her to get in trouble or have to compromise her relationship with her religion or parents. In all truth if she is dating you right now it is obvious she does not really think a strict interpetation of the jw rules are working. You need to see which ones she values and which one shes does not. And as far as the blood issue it is such a joke right now it is not worth discusing. PM me if you wana know more about it.