B.W.
I think Dawni's advice is very good. I would also do that and then just DROP the subject of her going to the potty in the chair completely for 4 to 6 weeks. You can tell her that you know she isn't ready yet, but she will be soon. Sometimes, when you totally drop the subject, they decide to train themselves. So, go back to thinking she is like your son, not expected to go to the potty for a while. If that doesn't work, when it gets warmer, tell her you have run out of diapers her size and from now on she will be in panties. Then, have a chair in whatever room she is in unless you think she is comfortable on the toilet. Some kids worry that they are going to be flushed down the toilet. You could "Google" the 48 Hour $75.00 method of potty training. The $75.00 is to pay to rent a carpet cleaner after the weekend that you do nothing but focus on having her go potty on the chair. Some parents make such a BIG deal of their kids going, that the child decides to rebel and not do it. I would be very low key when she goes potty in the chair, saying something like "Becca went potty in the toilet, I can tell she is getting to be a big girl." Don't have cheers and go overboard, as this often backfires. As far as your son, you could take a diaper size pin and make the wholes in his nipples a little bit bigger. In a few days, make them even a little larger. In a few more days, take a pair of fingernail scissors and clip out a little bit. Keep making the whole a little bigger every 3 to 4 days. He will likely throw the bottle away himself! Good luck!