Unexpected happenings (Legolas x reader.)

Before, a long long time ago, before Sauron was who he is know, he was a very nice calm and loyal Maiya he met a Mirkwood she elf and they both fell in love. Soon afterwards the she elf gave birth and a new family was formed, everything would have gone good if not Sauron's thirst for power. He became a liar an evil maiya the destroyed and dominated. His wife and only child fled from him and hid in Mirkwood. When the Mirkwood elf's found out that they lived here they went to kill her think she is evil and this was all a plan of her husbands. No one knew about Sartamiwe her only child. The little girl fled from Mirkwood in horror. She was too small to understand anything. The girl had a lot of power like her father, she was half Maiya after all. She wondered around middle earth alone and was cough by a party of orc's who wanted to eat her. But the little girl used one elven blade her mother owned to slay 2 thirds of the party. the rest decided to bring her to their master. Sauron recognized his child and so Sauron kept her and trained her to rule but at the age of 90039 Sartamiwe got tired of this and escaped. She could also use the ring of power for it was made by her too, but then she found out how her mother and a lot of other good beings died. She was angered and wanted her fathers death. She went looking for the Ring in need to kill Sauron. But then, she came across Lord Elrond. He knew her in a way and decided it was best for her to help the fellow ship and then fell in love with an elf. What is going to happen when he and the rest find out?