I don't have a problem with my partner going through my phone or laptop and he let's me go through his phone when I feel I need to but to be honest it's pointless because if someone wants to hide stuff from you they will just delete the evidence and cover their tracks..

Why do you want to see her phone or laptop? Is something making you feel suspicious?

Trust is a huge part of a relationship, is your phone/accounts open for her to see? Be secure in who you are and your relationship and you shouldn't need to see her phone/laptop

Yeah, you’re overreacting. It doesn’t matter who you are or what personal things they might have done in front of you; a person has a right to some privacy.