My nan's chihuahua was like that. It took three of us to handle this tiny dog just to clip his nails. He'd squeal like nothing we'd heard before In the end when he had heart problems we'd take him to the vet to be mildly sedated and let him cut the nails.

There is already some good advice here, so I will just say good luck. I hope Louise calms down a bit. Mini is a bit of a panic merchant, so Shane wraps him in a towel and I pull one leg out at a time to trim the nails.