Monitor will use everything to stop traveller to change the history of Teyvat, if necessary,she will erase traveller. She changes into Ei's body, own Ei's power, mind and personalities, she can behave exactly same as Ei who is the strong and cold Raiden Shogun, but also traveller's lover. She will use power to beat traveller, but when she fight with traveller, she will be affected by Ei's memory and love to traveller. But monitor will try to overcome emotions.