I'm trying to maintain a long-distance thing online. She's not my girlfriend, as she moved away before that could happen, but I'm visiting her this summer (as part of another trip).
I'm just curious about the ins and outs of text/email messaging, as it's something I've always fallen down on. We've sent quite a few messages to each other, and so far I've held off replying too quickly and that kind of standard thing. However, the emails seem to be a long series of points about what I'm up to, then a few questions for her, and visa versa. We're also throwing some IOIs, jokes etc... into each email. I realize that this sounds pretty normal, but her last message came back much quicker than normal (usually we message every 3 days or so, this came back after like half a day). It was much, much shorter than usual, and totally ignored almost all the points of my last email. It gave a very brief summary of what she was up to, and then said 'tell me more about (place I'd been on vacation)!'.
I didn't know if this was a shit-test or not, and didn't really want to do the whole dancing monkey routine in simply abiding to her demands. So I sent an equally short message back, gave a brief but funny anecdote what I'd been up to, and then said 'How about you tell ME more about (place she's living in)

'. Finally threw in a FTC for good measure.
I realize this comes across is wayyy too over analytical, but I've had instances in the past where this kind of ongoing messaging without physical contact can just boil out, and this girl is really awesome, so I'd rather not let that happen. I'd been fine at reading her face to face, but for me this kind of thing presents a whole host of options including:
> losing interest
> doesn't have much going on, genuinely wants to know more about what I'm doing
> shit test (as mentioned above)
Any tips on maintaining this kind of thing, and dealing with irregularities such as the one mentioned above would be appreciated

.
Thanks!