Hi Adrienne, Sorry I didn't have much time yesterday to go into the ins and outs of the Libre. There are lots of advantages to using it. When I had it on Ruby recently I never checked the results against a blood test because I didn't want to drive myself crazy with the difference in readings. From what I understand, there is a 10 minute lag between blood glucose levels and interstitial glucose levels. I also think that the newer Libre, the Libre2, has more accurate readings. You can use your iPhone to scan with the original, 14-day Libre, but you have to get a separate Reader with the Libre2. You can connect the Reader to a PC computer and download all of the raw data to fill in your spreadsheet, so it's an extra step to get 24 hours of readings but it was helpful to me to know all of this. You may not need it.
I planted the Libre on Ruby's neck as per
@Tomlin's advice and got her a Kitty Kollar to cover it up. Ruby scratched at it, but always caught onto the Kollar rather than the sensor so she never scratched it off. I put two drops of Vetbond on the sensor in addition to the adhesive that comes on it and it held well. The sensor itself only last 6 days this last time, but given how widely Ruby's BGs were fluctuating from the pred, it was good to have for a while and it was nice to have a vacation from pokies. Ruby enjoys the routine of testing, so when the Libre conked out it wasn't a problem for us to resume the blood tests.
Given that Dolly is usually so flat, I don't see a need for you to get the Libre unless testing becomes impossible because either she won't let you or if, more importantly, you can't physically handle it. You can still keep her safe with fewer tests, doing them somewhere between +3 and +6 and help with higher carb food if needed.
Hope this helps and that you're having a good start to your Saturday.