Well, if SHE DID acknowledge it, and poked it, I would use water. That seems like it is the only change that would get it to possibly eat if it had already acknowledged it. only takes 5 minutes, and doesnt rot (which I am not 100% sure happens if you thaw it using heat)

I thawed a mouse in hot water, and it had a bloody nose, and my snake took it immediatly about 15 seconds after I removed his hide.

Im scared of him now ever since he struck me after he ate. Today he was in shed so I didnt bother lol, looks like I got a "dud" docile bp