For Jane Smith - her mother's name was Catherine Kellochan, husband was Anthony Smith. I don't think she's a match unless her mother is related to my GG's mother.
For Margaret Kellochan whose death was listed in Dennistoun in 1900 - for some reason, the deceased is actually her daughter, Margaret McDonald, so I'm not sure why Scotland's People has it indexed for her mother. Margaret Kellochan is listed as deceased on the death certificate, with husband John Kellochan (also deceased). Margaret Kellochan's maiden name was Paton, so to me it's an unlikely match unless John was somehow related to my GG's mother.