My oldest girl, Rin (6 y/o) weighs in at a whooping 3.5 lbs. Her tiny stature wasn't intentionally bred, she just happened to be the smallest in the litter. My daughter was a teenager when she chose Rin. I asked her, did you choose Rin because she was the smallest. My daughter told me she chose Rin because she was the smartest
So, Rin is small, fearless, incredibly smart, and mostly healthy. (She does have Grade 1 LP). Rin doesn't know she is tiny so we only have to be careful of her jumping.
As long as yours wasn't bred to be a tiny, she could be just perfect