Hey man!
If i was you, i would stay in touch. Just dont overwhelm her with messages. You are staying in the fabulous land of the Belgians for 10 days, so a message or 2 is enough. Ask her how she is then tell something you saw, just some small talk. Also dont be tempted to engage in these text conversations without any substance and who can go on for ever and ever. Even is she doesnt seem to mind, keep it brief. Like you are trying to tell her: 'i am doing all sorts of stuff here, but i ll take just this tiny bit of my time to hear from you. But i dont need you.'
when she texts you, reply, one or two times, but try to keep it brief as well. If she is persistent, with lots of questions, tell her: 'hey, lets meet when i am back and i tell you all about it!'.
This is what i would do. You feel like she is interested, so i would try and keep the fire burning. Like with cats, keep the little string dancing. Dont overdo it.
PS: where are you going in Belgium? And what is the reason?
