I know I am reacting here. I know trying to figure her motivation is futile. But still it just threw me for a huge loop to be honest.
It's all new - of course it through you for a loop... . breathe - she cannot hurt you any more than this.
The thing is - most likely, she had an emotion (who knows what honestly) and for HER you are both a trigger and a soothing figure depending upon her mood. Looking at you was not about you - it was her self soothing.
In the same way you reacted by coming here (good job, healthy) she reacts to an intense emotion by finding you - not very healthy or kind (but heck, how many nons on here have been guilty of this too).
In today's online world, this stuff happens - and we may feel scared/fear, but that fear is not real, it is residual stuff to process.
Hang in there,
SB