If your child is not ready to potty 'train'... it can take a long time.
You can use a potty chair, and put it nearby her wherever she is. That is what I did with my kids.
ALSO, they need to have the biological development, to know their body's cues....
BUT bear in mind, that even potty trained kids, WILL have accidents. It is childhood. No child, will be 100% perfect about it, all the time.
AND, night-time dryness is not something that is attained, BIOLOGICALLY until even 7 years old. Day time and night time/nap time pottying... are separate different things, and time-lines.