Pineapple Express - Organic Outdoor GotRS

I’ve been away for more than a week and she got quite bad. She has lost a lot of leaves and one of her branches is destroyed. Than I saw the bottom of the branch was brown and the main branch as well. Should I cut it? With this I would lose the half of the plant. I need help guys. What should I do to save her? Update: It might be an infection of Fusarium as some helpful fellow growers pointed it out BUT After cutting off the affected branch I couldn’t see the brown layers said to be a characteristic of this fungal pathogen plus it was hollow and I didn’t have to search for long until I found a few caterpillars. If these little basterds had done this damage I would be happy and treat them with some BT. Can this mistery have a happy end? Update: No it can’t. It is fusarium. Today the brown stain on the stem reached a crosspoint and the other branches affected wilted. So today I have to cut this beauty down. R.I.P