I am currently going through a similar thing as you went through and it's a hell of a ride.
But in your case, if she gave you presents, said sweet words, told you secrets and even POSTED YOUR PHOTOS ON SOCIAL MEDIA. I think she cared, her care was more than average.
Regardless, no regrets. It's good you started giving your care and attention to people that mattered.
Now I have a question, should we just settle with the girls that loves us already or we should continue chasing love and get mistreated like this?