T.C.
Have you tried letting her pick a favorite doll or toy to take with her? It sounds like you need to find out if this is some type of anxiety issue. My son(who is now 8) has gone through stages of complaining about wanting to go home. Sometimes he was bored, sometimes he was overwhelmed if the place was too loud or busy, and sometimes it was something as simple as needing to go to the bathroom but didn't want to go in a public restroom. Bringing a toy or snack, listening to music with headphones, and having a stroller as a "home base" seemed to help him. Now he's old enough that before we go somewhere I can ask him to make a plan of things to bring to stay calm and not get bored.