Sudden potty refusing

[SquedgieBeckenheim]

2 year old DD has been potty trained for a few months - still occasional accidents, but consistently dry while awake.
We went away for 4 days leaving her with my parents, and she was good using the potty for them also. Since we've been back though it's a very different story. She will not sit on toilet or potty without a fight, won't "perform" and constantly wetting. I'm wondering if it's a delayed reaction to us going away, but I don't know how to resolve the issue. I don't want to force her, or stress her out, but I know she can be dry! Any advice?