S.M.
I don't know that she is TOTALLY ready to be potty trained. My daughter was going number 2 on the potty by the time she was 3 but she wouldn't go number one until she was 4. One day she just decided she wanted to wear underwear and go on the potty for everything. She liked underwear before but she knew she couldn't wear just underwear because she wasn't going on the potty. Big thing is, I didn't push her or make her sit on the potty. I would just casually mention it to her every once in awhile and see what she said. We did stickers for awhile when she would go number 2 and when she went number 1 and 2 on the potty she got a tootsie roll. That worked really well so you could try the m&m's and see if it works but I just wouldn't push her because that might make her regress and refuse to go. My daughter is stubborn too and if it isn't her way, it is no way!! So that is why I just left it up to her.
Good Luck!