Will it work? Yes
Would I recommend it? No
12ft is big enough, but once you put 2 people, crab pots, cooler, fishing gear, etc., you are adding a lot of extra weight. There is also the fact that with 2 of you and all this gear she will not have much comfort in the boat. Most people that are not on the water much need a little room to move around, seems to make them more comfortable. With your boat loaded with gear and 2 people, you will also be sitting a lot lower in the water. The wind can come up fairly quick and if your boar is to heavy it may fill with water and down you go.
All that being sad, safety is key. You don't want to be out on the water wishing you had a bigger boat, not a good time.