Poor girl, I take it you are in Perth WA? I'm in NSW and have an EPI boy named Harry.
Have a good look at the epi4dogs website - EPI in Snapshots - EPI * Exocrine Pancreatic Insufficiency
, there is a lot of information there and can get quite overwhelming with information, so to give you the basics.....
1. Give her replacement enzymes before each meal
. In Australia, we use either Creon 10,000 or 25,000 and you can purchase online from Chemist Warehouse creon - 6 Products in Search Results - Chemist Warehouse
. Harry has 1 Creon 10,000 before each meal and I just open his mouth and drop it down his throat - he then gets a treat then his food.
2. Increase her food intake to at least 1.5 the recommended amount (or even double to begin with) and feed her 3 to 4 times a day if you can. For example, Harry was on 6 cups of grain free dry food and 400 to 500grams of raw a day spread out over 3 feeds when he first started treatment.
3. If feeding dry food, switch her to a grain free version such as Canidae.
4. Treat her for SIBO (assuming her stools are bad, sloppy, yellowish diarrhoea) by giving her Tylan Petceutics - TYLAN SOL POWDER 100g
. Hide the powder in her food or buy a cheap capsule making machine (size 00 with 00 capsules) and make your own capsules up.
5. Ask your vet to give her a B12 shot every week for 6 weeks, then wait another month and give another shot - keep her B12 levels high.
I hope you are able to keep her and treat her. You will find once she starts getting replacement enzymes and treatment for SIBO and keeping her B12 levels up that she will gain weight, it is not too difficult to treat and manage at all.
The epi4dogs is a wonderful website and if you register, there are many people with loads of experience that will help you.