SLE autoimmune disease

My mother recently diagnosed positive for U1RNP antibodies and Smith antibodies. We don't know anything about autoimmune disease until my mother got it. Currently she is very weak as she has protenuria since one month. started using omnacortil50mg since 2 days. I don't know what to do next as she is not getting better. her rhc,wbc count is very less. I want suggestions for the right treatment for this.