HELP !! EMERGENCY

help !! :(

yesterday i put my girl in a different tank thinking she would like it because it’s bigger, but she’s as stressed as ever and i don’t know what else to do.

there’s only two other guppies in there and snails, it’s been cycled for a month, it has a filter, heater (27°c), and i turned the aerator off because they like still water. im just not sure what else to do and im worried. should i put her back in her old tank (where she was moderately stressed) or put her old water in this new one? what will help without shocking her more?