Betta Fish: Need help identifying my betta

Hi all,

this is Ella, she has been with me for 3 months now, and overall this tank is my first time taking care of anything aquatic so forgive me for my limited knowledge so far. I wanted to ask whether you can identify her subtype or what is it called. She is betta splendens, I know that much, but I don't know anything else about identification and I would like to learn more about her. Forgive the lighting, it does her no justice in the first two photos, the second two are older, the darker colour is blue and she is lighter pinkish.