Do teachers find it creepy or appeasing when a former student emails them?

I emailed my history teacher a few years back to kinda talk about how I was doing since I had left school (I was only out for maybe a year at this point) and I was at a very low point in my university career. I thanked her for inspiring me, and talked about how I wanted to be a teacher like her. After I sent that email, my life completely flipped and I changed my course and approach to uni. Now I love it. Every day, I find myself still inspired by her classes (that were about 4 years ago now). At the time of sending my first email, I was a depressed, failing first year who constantly considered dropping out. Now, I am a thriving B student who is about to go into 3rd year, and live out my wildest dreams by doing an exchange programme to America. I have also been a class rep for the past two years and I run my own society all for history. I love what I do now, and I am excited for the future. I can’t remember the last time I considered dropping out. I want to update her again with how it is going, but I don’t want to see creepy or stalker ish. Do yous think this would be something you would like to hear from a former student? Thanks