C.U.
We are in a similar situation with a new baby in the house and all she might be refusing to potty train b/c you have to take the time and change her......my daughter was 2yrs 5 months when her little sister was born and she refused to go on the potty. I wouls ask her everytime we went to the store are we going to get you diapers or are you going to be a good girl and start going on the potty? Then one day she said no more diapers I am not a baby like her (meaning her sister) We bought her a pack of panties and never looked back. I said if you are changing the pull-ups all day put her back into diapers. My daughter started using the potty at 33 months and by the age of 3 we had no more accidents and only wore pull-ups for a week. She just might not be ready with the change in the household with the new baby. Give her sometime and let it be her decision. Good Luck.