10 days of communication is nothing. I have had several pen friends over the years and without exception the level of correspondence has diminished over time. Also without exception is how each one gradually faded on me. I no longer take it personally. Neither party owes the other anything, sometimes life gets in the way and sometimes they find someone with whom they have an even better connection.

Enjoy what you currently have, but don't put all your eggs in one basket in case she turns out to be someone else, or fades on you once the initial excitement has worn off. She may not have asked for money or other favours yet but it's very early days.