Guardians of the galaxy fan fiction slow updates

(This is sort of going to be a reader x Groot sort of story but you name is Callisto. I am willing to do smut or lemon but I am not to sure how to go about it. Bare with me if I don't get all of there personality's right I'm still pretty new at this. The updates will probably be slow but I will do my best to update in regularly But here's the story line. Ps I completely forgot to add Mantis, and Yondu is still alive I refuse to accept the fact that he's dead. this is set five months after they destroyed ego Groot is an adult, he's going to take on some of the comic book qualities of being able to regrow almost instantly. P.P.S my character and her brother are part celestial part human they incredibly strong. I've made up a few new infinity stones that will be revealed later But any way here's what it's going to look like.)

After the defeating her brother years ago with the help of the guardians ( this was a few months after they defeated Ronan) she assumed he would be gone forever and she would be able to live in pice and kick bad guys asses. Until one day while on a planet and trying to save it from Thanos's men she is gravely injured, she doesn't wake up for two weeks. When she finally does wake up everything seems to be going well until she settles down to sleep for the night. She is visited by her brother Vulcan she watches as he kills the guardians and her beloved Groot and Rocket. He threatens her while she sleeps tormenting her she can feel his power within him. when she wakes up she's traumatized she knows that he's been awoken and is coming for revenge on the guardians but mostly on her he wants to kill her badly. Can Callisto and the other guardians stop him once again or is the galaxy doomed to fall to Thanos and Vulcan with his infinity stone of death or will Callisto be able to reverse all the damage her brother has done.