I'd say drop it and wait for her to show an interest. My daughter showed some initial interest shortly after turning 2 but then stopped and really didn't want any parts of it. We left the little potties out in the bathrooms so they were available if she wanted, but never talked about them or asked her about going. She also had her big girl underpants in an accessible spot for her to see and get whenever she wanted - but didn't force the issue. We didn't do pull-ups. About 6 months later she woke up from her nap one day and told me she wanted to wear big girl underpants. I said ok - she was dry ever since basically. I think we had 2 accidents - outside playing and just didn't have enough time to get to potty and 1 at preschool during a nature walk followed by playground (she is VERY shy and hardly talks to her teachers so asking was complicated.) We gave her a single M&M when she peed and a Hershey Kiss when she pooped. I did put her in pull-ups anytime we were going someplace that I thought we might not have access to a bathroom knowing my daughter is a perfectionist and sensitive so I didn't want her getting upset over an unavoidable accident and decide to quit the potty again. Some say they might get confused, but I always told her she could ask and we would try to find a potty, but that it would help in case we couldn't find a potty. She got it and would always ask and really didn't like the few occasions she had to resort to using the pull-up --- she would try to hold it for a long time first. We also put her in the pull-ups at nap and bedtime until she was consistently dry during sleeping times. She stopped wearing them at nap first and then bedtime a little while later.
It truly was a completely stress-free process for all of us. I think that since we waited, we were rewarded by minimal accidents. The other advantage is that she was super at asking to go when she needed to - I never had to set timers or remind her every hour or anything like that. I would try to remember to suggest she try before leaving the house or going outside to play (we forgot to do so that one day she had an accident). I also have a younger child so that was a fabulous help.
My son thinks he can do everything his sister does - at 17 months apart, they are more like twins in so many ways! He decided to start potty training at about 21 months. He would go any time his sister went. If she went often enough, he'd stay dry. He never asked to go when he needed though. I was about 4 months pregnant when he started and skeptical about it lasting so I didn't put too much energy into it. He's continued for the past 3 months. Until recently he really only wanted the big potty so it was just difficult to lifting him repeatedly while pregnant - my back was really getting sore. So I wasn't too motovated to keep super focused on it. Now that he likes the little potty, we have it in the living room so it's in his sight to remind him and he doesn't need lifted and it's much easier. But he still needs the reminders that my daughter never did.
I completely think it's because she was just older and more aware. So, while I'm not complaining that my son has taken charge of this himself, try not to be too discouraged that your daughter isn't following your lead. Give her time and watch for her to show an interest and I think you'll find it can be much less stressful on everyone.