Got to give my daughter credit on this one... how in the heck does one hack into my Gmail

so all of my emails are mysteriously forwarded to her without my knowledge... I stumbled onto this the other day and thought it was strange that a lead for my sales job was delivered to my gmail and I noticed it was in her gmail.. but then I unraveled this and go figure all my emails are auto forwarded to her and yet it doesn't appear in the gmail box on her computer or her outlook.. but I do have her gmail on my phone and that's how I noticed this... then I did some additional digging and found that there was no formal forwarding on my gmail settings... she vehemently denies doing this... but I have my suspicions'... but I'm also not a tech person... any thoughts? doesn't seem possible that this is a 'mistake' by google as she has had issues with doing wierd stuff like this before... I guess there is a reason God gave us kids as babies first so we can love 'em... if they came to us as teens... not sure they would survive the first year.. haha