mom has cancer

Samantha
So my mom and I got in a fight and tempers reveals that my mom has cervical cancer.  And my mom doesn't want to tell me much about it because she doesn't want me to worry I'm 17 soon going to be 18 and have two little sisters 6 and 8 we've always talked about if something were to ever happen to her that  I would adopt my sisters but I want to know what I need to know about cervical  cancer because she won't tell me anything