Should I go through with trying to troll my girlfriend
Why do you need to troll her?
It's just a funny prank. There's no meanness intended.
I love some wholesome pranks with the people around me sometimes, so I understand why you would want to troll your girlfriend. However, she may not find it amusing nor find it funny, so I would recommend that what you do instead is to just keep it safe and light hearted about the pranks that you're gonna pull towards her.
I mean, come on! You're being too serious!
I really think that trolling her should be taken serious. It could make her feel unsafe and insecure, and it could have a lasting impact on her. If you want her to trust you in the future you should really find a less malicious prank.