What i would suggest is a different way of looking at it. Potty training/ changing/ toileting should be part of a ROUTINE. just a regular part of your day. Every morning you wake up, use the bathroom, get dressed have breakfast, etc. end of day go potty, take a bath, put on jammies, brush teeth, read stories, kiss goodnight lights out.
There is some flexibility maybe on the weekends you sleep later, or maybe some nights you skip a bath. but for the most part families should have some structure to their day.
those are the times when you are changing your child that you introduce the potty, with no pressure. Here i'll take off your diaper, wipe your bum, you can sit on the little potty for a minute, just like mommy and daddy and big brother do. no pressure
then you put them in real Underwear Not pullups. they need to feel the wet. use plastic undie covers, or let them run around on tile floors instead of carpets. ( this also might mean you don't spend a ton of time outside of the house for a week or so)
Give lots and lots of liquids so they actually HAVE to go.
again make it part of your routine, ok before we eat lunch, mommy needs to go potty and you can sit on your little potty too., nothing came out, ok not biggie, we will sit on the potty after lunch too.
giving kids books to look at or letting them blow (soap) bubbles while sitting on the potty helps relax them.
and be soo soo happy when they do .. do. something.
to me expecting your child to tell you she needs to poop is like her saying, oh darling mommy it is 7 pm and i'm sleepy I'd like to stop playing now and go in a dark room while you and daddy keep playing.
in general that doesn't happen,, most kids start yawning, or rubbing their eyes or yawning, or getting crazy or whiny.
SHe will give you clues she needs to go potty too. like freezing, or hopping around. just like with bed time if you have a routine and can start bed time or a potty trip before they show those signs you'll have better success.
but i will say, it won't be very convenient to YOUR schedule to potty train for a few weeks,
so decide if YOU are ready to invest the time and energy. personally i was happy to not pay for or deal with diapers any more.
oh and guess what just like learning to walk, when she would make a mistake and fall down, you wouldn't yell at her or be mad right?
She is going to have some accidents.. Show her how to get a towel and wipe it up ( you can sanitize later) how her were to put her wet underpants, and how to wipe herself up. and put on her dry underpants. no shame, no anger. just learning how to be a big girl.
Good luck to both of you