The intention to escape with her a little from all her stress and bs she has going on is absolutely perfect and you should have stick to that plan, playfully say no to filming and instead you grab her hand go as close to the stage as possible and lift her up to your shoulders even when she says no. Also, if the situation doesn’t suits you, you absolutely can play along a bit it’s maybe simping isn’t bad when it’s gf but you have to set boundaries. If you wanna keep that relationship going, say more often no to things you explicitly don’t wanna do. From my own experience -if you go now and start arguing about that incident with her, it’s gonna be rough and guaranteed she comes with "i need more space you’re too controlling" So, say more often no, and do it progressively and in a neutral manner or friendly manner depending on the matter.