General :: Extract SMS Conversation From Phone To Read On PC

The short version is that I need to be able to extract one specific conversation from the stored text messages on an Android phone, transfer it to a PC, and then convert it into some format that is easily and comfortably readable on a PC.

The background to this is that my girlfriend had kept all of the text messages she had previously received from me; but a couple of weeks ago a rather unpleasant gentleman kicked my front door in (while she and I were both in my house), demanded money, and made off with my wallet and shoulder bag, and my girlfriend's handbag, which contained her phone. A bit scary as you can imagine.... We're both okay, but my girlfriend was a little sad to lose all the messages I'd sent her.

As it happens, I generally keep long-term copies of the texts that I send and receive (not for sentimental reasons, I'm just a bit of a hoarder when it comes to data!) so I've probably still got copies of all of those messages somewhere (my phone didn't get stolen), and I'd like to extract them and give them to her as one of a set of birthday gifts.

Potential complications:

1) I need to extract both sides of the conversation (my messages to her and hers to me) into a single file.

2) I need not to extract messages to or from anyone else.

3) Sometimes a number may be in 07... format while other times it may be in +447... format.

4) Girlfriend changed phone number at one point.

5) Messages will be split between my old phone (a Samsung Galaxy S2 which can still connect to wifi or a USB cable, but has no actual phone service any more) and my new one (HTC One).

6) The end result needs to be a single file with everything in chronological order.

7) Girlfriend is extremely non-technical; so the end product has to be something that can be loaded and viewed on a laptop by launching just one file, and it has to be nicely laid out and easily readable when you're viewing it.