So I've been dating this girl for almost 2 years, and a lot of **** has happened...
Including bad things. This was a while back but it really put a crack in the foundation of our relationship. I've yet to completely come to terms with what happened.

There have been a few small questions itching in my head, some for a long time, some for only a short time, but all somewhat relating to what happened.
I really want to know the answers, but... will I make things worse by asking? Will it just lead to argument? But I feel like these will continue to haunt me if I don't ask. But... I might be gravedigging some old issues. She might also be offended that I'm asking because of what simply asking implies.

So which of 2 evils should I pick...

Should I try to accept what's happened and what is, and therefore risk bottling up my problems?

Or should I ask the questions, possibly get angry and get in a fight, but hopefully be able to let it go afterwards?

You should ask. If she really like you she will answer without any problem. She might get angry but I'm sure everything will go fine.

Ask her. If your relationship is to succeed and prosper, you need to know. Otherwise, it shows you don't trust each other and can't face each other. What kind of relationship would that be?

That's what I'm leaning towards...
I'm just worried about what will happen, our relationship has been just fine, and I'm really looking forward to her spending Christmas with my family.
I don't mean to make it sound like we're unhappy together.

Maybe I'll do it tonight

You should, if see really does love you, it wont be a problem, just a minor bump, if anything. If you do, and it all goes good, you will be more happy.

If such questions bring much trouble between the two of you, then I think she certainly does not like you.

Ask the questions. If I were her I would want my boyfriend to be able to ask me anything, which is surely the mindset she's in if you two have went out that long. I say ask her, but avoid the fights, ask them cautiously.

I don't know man. Now-a-days, people get mad when you try to question them. What kind of person is she?

You are the better judge man, depends on how you understood her and how she understood you, go on and ask her if ur sure

You must ask.
They say, "In true love, silence speaks more than words"
It's very outdated man!!!!
In these days once must represent the feeling. And if you until you will as, how will she come to know what you want. And until she will reply you how you will come to know what she think about what you want.
Make it clear dear, just go and ask!!
Best Of Luck!!!!