Welcome kvong33...
Did you read the Sam's CRD Noob Guide?
viewtopic.php?f=5&t=54207It will walk you thru most of the things that go wrong with the CRD including Fuel head leaking issues. That sounds like your problem. There is a known problem with the 1st type of fuel head, You may need to replace it with the 2nd gen type.
Sorry... it sounds like this is a primary form of transportation. Without knowing and doing the things on Sam's Noob Guide your in for a battle with your CRD Jeep.
Spend some time reading with your wife if she is driving it and then ask questions.
Best of luck to you!