Introducing myself and my journal: childern rights

About Me:
I'm 32yrs old married women,i have 5yrs old daugther
I stay in pretoria north with my husband and daugther
My husband is her step father.

i had a child when i'm 26 yrs old and afterwards my boyfriend he proposed to me and paid lobola.i move out of the house since he paid lobola and stayed with him. we never sign anything ,we were about to get married,but unfortunately i court him cheating in our flat and that was the end of the relationship.
now i'm married with another man and i aslo want to change my daughters last name she was using my maiden name ,but i cant.

My Challenges:
why should children suffer ,because of their parents mistakes.

My Vision for the Future:
i want to see that being changed