From my experience attachment is really painful while liking the T is not painful at all. I know when I'm attached because I'm too obsessed with the T, I daydream and fantsize about them, I want them to hug me or to love me, with my previous T it was really painful and I wasn't even able to focus on other things! It's like he was my world.
With my new T, I can recognize that I only like her, I can see that she's skilled and has qualities, but it's not like I daydream about her. I noticed that I become really attached to male figures mostly, so male therapists and not females.
In general attachment is super strong...I don't know if it's normal to feel pain when attached, maybe it has to do with childhood and not having a secure attachment.

I think, for me at least, attachment brings some pain with it, some longing. The wish to be more a part of their life than the boundaries of the T relationship allow. Pain if I get any sense of rejection from them, like tightening boundaries. If they cancel a session at the last minute (or even the night before), I might end up crying or at least feeling sad or let down.

Liking is more, "I want to spend time with them," but without the need. Feeling they're helping you, but not feeling like it could be the end of the world if, for some reason, you had to stop seeing them or they tightened boundaries.

Annie, I also think it makes a lot of sense that you're focusing a bit intensely on your T right now. You're stressed and away in another country without your usual supports. It seems perfectly natural for you to have urges to connect with somebody who has been so kind and supportive to you, even if the only way you can make that happen is by looking at her stuff online. I know it seems obsessive, but it sounds like you're very much in touch with reality about the nature of your relationship with her, so I don't think any of this is concerning.