The whole purpose of dating / an engagement period is to make sure you are compatible. My wife and I have been together 9 years, married four of those years. Sure we have different priorities at times, and we get on each others nerves etc but never to the point where I thought that our relationship wasn't worth the effort or not working out.
If that was an isolated incident (the plant) then maybe she was just having a bad mood day, or maybe she didn't mean any harm by it... but if that is typical of your days, if you spend more time arguing than you spend doing things happy together then you might consider it's time to break it off.
You need to seriously sit down and talk with her, let her know you are having doubts, getting concerned, find out how she's feeling about everything, and really determine whether or not this engagement will result in a happy long-term marriage. Remember, I DO is supposed to be forever, through thick and thin.
(lol it seems like I'm on a counseling kick based on my last few posts) but if you have any affiliations with any churches or anything like that they almost always have pre-marriage counseling, where a learned advisor can help you work out current issues, give you tools for coping with issues, and in general prepare you to tie the knot.
