My girl acts like she wouldn care if i broke it off with her but she still with me does she really care about?

she cheated on me and i took her back and now i feel like she can jus walk all over me and she is jus walkin all over me and i want to get some strength back in the relationship but i dont wanna break up with her cause shes acting like that wouldn even bother her at all and thats killing me. i dont know what to do were in love but she says im wrapped around her finger and i feel that way which sucks and i want some power back in the relationship or at least feel like its mutal respect not her walking all over me