I would stop for a couple of months and remove all pressure or encouragement to use it and then try again x
maybe start really over exaggerating and praising yourself so like “yay I did a wee on the toilet, good job mummy, hmm what sticker should I pick today” ect, if she’s anything like my girl she gets serious fomo😂 me and dad did this allll the time and she was copying within a couple days of it! but equally maybe she just needs a break from it, we tried a few times before she cracked it! but you can atleast do the praising yourself part while you wait and it’ll make it all that more exciting! x
Maybe she’s just not ready yet?