I don’t think one instance of this type of behaviour makes you a stalker.

However, it is worth thinking about potential ‘repeats’. What happens whenever you go through hard times or don’t see her? Also, from what you write, she *might* have seen you this time. What if she catches you in the act in the future?

I think it would be worth nipping in the bud and talk to her about it (in an attempt to find more practical solutions and/or help you cope).

So, if I were you, I would bring it up - whether she does or not.