Sorry you had a bad experience. It can be frustrating when a party struggles through these dungeons for everyone. Just brush it off and keep practicing.
I noticed some of your jewelry is not class appropriate for healer. Jewelry can be equipped by any class and is not restricted like armors or weapons. Find jewelry that has mind on it and equip that. You can find new jewelry on the market board or asking a crafter. If it is too expensive you can run haukke Manor for level 28 jewelry or Cutters cry for level 38 jewelry. You can also farm leves--they drop a coffer that has gear you may be able to use. This will make healing much easier.