u/Chemical-Response275

I have a 105 groupset and my wife has a sora. When on the large chainring and the 3 or so smallest cogs, the chain rubs on the outside edge of the front derailleur, even with trim. Not a crazy grinding but definitely rubbing. Is this normal? My bike is new and hers is pretty new. I watched some park tool vids and indexed and set the limit screws on the front and rear, and everything shifts great. Anyone else have this issue and is there a good way to go about fixing it? I’m a total newbie to bike maintenance. Thanks in advance!