Hello Kate from a fellow Aussie 
Trish and the welcome message have pretty much covered everything the group recommends, so give the links a good read and let us know if you have more questions. 

Is she getting any grass at the moment? That can delay recovery. Hoof testers are not reliable indicators of laminitis, and pulses (or the absence of pulses) is not a reliable indicator either. There may be abscesses brewing or damage to the laminae that needs to recover. It takes 6-9 months for a healthy hoof to grow down, so while her insulin levels may drop quickly with the metformin, she may take longer to become sound. Have you tried hoof boots or padding on her feet to see if it helps her comfort? 

One more thing—make sure she is getting the full dose of metformin (30mg per kg of her body weight) twice daily. You’ll need an accurate estimate of her weight (there’s a link in the Wiki on how to do that). This is really important as lower doses often do not help. 

If she’s doing well on the teff and beet pulp, I wouldn’t risk the lucerne while she’s still footy. 

Let us know when you have a case history and photos/xrays uploaded.

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Maxine and Indy (PPID) and Dangles (PPID)

Canberra, Australia 2010
ECIR Primary Response

https://ecir.groups.io/g/CaseHistory/files/Maxine%20and%20Indy%20and%20Dangles 
https://ecir.groups.io/g/CaseHistory/album?id=933