Girlfriend on trip logged into a different snapchat account and started using it

My GF, 21F, lived in Scotland for a while but moved near me a few years ago. She went back to the town she lived in solo to go and visit a friend. she arrived yesterday and when I woke up this morning I saw that she had logged into her alternate snapchat account and started snapping people. I know this as the snap-score went up I checked multiple times the previous day before going to bed. (for context I was cheated on in my last relationship after living together) She told me about the second account a while ago and I thought it was odd so remembered and leading up to the trip told myself it will be fine as long as she doesn’t log into the second snap account I should be fine. and now she has. should I talk to her about it or am I being too paranoid. We have only been dating a fee months