I assume it was fully thawed out? it seemed rather stiff. Probably just the way she grabbed it. I also suggest getting some tongs to avoid a mis-strike hand bite in the future. You could probably switch that boa to rat pups.
Yes it was fully thawed out I always pat dry the rodents with a paper towel so I know how squishy they are. The only place near me that sells rat pups is an hour away and they’re live but I like your thinking I’ll start feeding her those as often as I can.