IME (Having potty trained 2 girls) the thing to do is
Don't worry about poos. They will come.
Don't worry about the loo. It will come.
Just decide on a time when you can afford a few accidents, and say "It's time to use the potty for wee wees now, DD"
Then put her in pants. No more daytime nappies.
You may have a few wet pants (DD1 was dry within a day. DD2 had lots of accidents).
Keep breezy about accidents "Never mind, let's get you new knickers. Don't forget, potty for wee wees" and ecstatic for successes "Wooohooo you're amazing, how did you get so good at that? I can't believe it...."
If you go for 3-4 days with no successes, or your DD seems really distressed, feel free to return to nappies and try again in a month or so.
Main importance is not to cause her to fear it.