<human>: Hi Reddit...  I have a problem and I need your help.  My wife is seven months pregnant and she wants to visit her grandfather in Arizona for five days during December.  The cost of the flight is currently $680 (she's waiting until December 1, when we actually have money, to get the ticket).  Our income is roughly $1,300 every 1st and 15th.  We live paycheck-to-paycheck and I've been trying to tell her that it's not a good idea to pay that much for that short amount of time, especially with a baby on the way.  She accused me of not wanting her to see her family and she brought up that I see my family all the time to which I responded, "My mom or my boss has bought my plane ticket ever since we moved away from home; it's never cost us a dime and you know that.  If your grandpa wants to buy you a ticket, great, I'll help you pack."  

Anyhow, she's also brought up going to visit my uncles and their families in NY, which is about a seven-hour (and about $50 in gas...maybe $60).  She mentioned renting a mid-size SUV (which is about $300 for the same length of time).  

I'm actually content staying home and having our own Christmas together ($0 in travel expenses).

So my question to you, Reddit is: what should I do?  Just suck it up, let her pay $680 for a five-day trip?  I have a feeling that if I do that, she's going to regret it later.  Additionally, not to be a dick or anything, but my family is slightly more qualified if something were to happen to her and the baby.  (Two MDs and two RNs).  Her family, on the other hand, are meth-addicted, chain-smoking, trailer-inhabiting layabouts.  Her grandpa is a nice guy though.  You'd never know all these crazy people where his kids.  Additionally, if something DID happen while she was in AZ, there'd be no way I'd be able to get to her.

Condense the text into a few key points
<bot>: Wife wants to spend $680 to go to AZ for five days and is 7 months (will be eight months in December).  I don't think we can afford it and she's being unreasonable.  Help.