I'd like to clarify a few things
First of all, the quote about apostates and not mixing with them does NOT apply to the majority of the general public. Here is the definition of apostacy, and an apostate is simply a person who commits apostacy. Also, the admonition to not mix with apostates is taken from the bible, it's not a man-made rule or policy.
Main Entry: apos·ta·sy
Pronunciation: &-'päs-t&-sE
Function: noun
Inflected Form(s): plural -sies
Etymology: Middle English apostasie, from Late Latin apostasia, from Greek, literally, revolt, from aphistasthai to revolt, from apo- + histasthai to stand -- more at STAND
1 : renunciation of a religious faith
2 : abandonment of a previous loyalty : DEFECTION
My sister became one of Jehovah's Witnesses when I about 9 years old (she was 19, she's now 54), so I got to see this religion over the course of many, many years. I got to see how she raised her daughter, who is now 34. I have to say, I really envied the childhood that my niece got to enjoy. Yes, she did not celebrate her birthday or the regular holidays, but boy did she have a lot of fun having parties for her friends (pool parties in the summers, pizza parties with her friends at any time of the year, etc etc). My sister and BIL would buy and wrap presents for my niece at various times of the year, simply because they felt like giving her a present. She also was raised with excellent moral values and standards (I am not saying that other people of other religions do not raise their kids with these same standards! lol) but their religion was such an integral part of their lives that these standards were always in the forefront of their lives.
Another thing regarding the blood issue:
Blood is mentioned
specifically in the bible. It is mentioned that blood is sacred to God and is not to be taken in. Back in the day when the bible was written, it said "do not eat". It was a major offense, if an Israelite ate meat with the blood still in it. It does not say "do not take in blood by intravenous", however the meaning, in the opinion of Jehovah's Witnesses, is still the same, that God does not want us to take in blood, by any means.
Jehovah's Witnesses absolutely accept all other medical treatment, and will accept blood volume expanders, and will do everything short of accepting a blood transfusion to stay alive.
Regarding Jehovah's Witnesses keeping aspects of their religion "secret" from others:
Ok this is totally untrue! LOL Talk to any Jehovah Witness, ask them any question about their religion, beliefs, the way their religious society operates, etc, and they will be more than willing to answer all your questions. There is absolutely nothing "secret" about this religion, at all.
Regarding seeing a Jehovah's Witness travel over the holidays:
My sister, BIL and niece would often travel back to NJ during the traditional holidays simply because that's when my BIL had off of work and had the time to take the trips to see us.
Thank you to the person who pointed out that a Jehovah's Witness would *never* burn the flag of their country. They are taught to respect the laws of the land (unless those laws would directly conflict with their religious beliefs), pay their taxes (give Caesar's things back to Caesar). Jehovah's Witnesses are not *against* any government; they are politically neutral, NOT anti-goverment. They recognise that governments are a necessary part of the world we live in right now; without laws and a social structure, the world would be quite a mess. (Imagine no speed limits, for example. lol)
Anyway, just wanted to add a few things to this conversation, thanks for reading!
And P.S. It is very possible that the OP's workmate really is a shy person and that her religious beliefs are not fully the reason for her being a quiet person. I know many, many Jehovah's Witnesses, some are shy, some very outgoing, and everything in between. Like others have said, sometimes it can be a difficult thing to announce something about yourself to people you work with, if you think they may not accept it, and especially in the work place because there is not necessarily a need to share one's beliefs with work mates.