Like everything else in Robina's history the census image is unclear.
However it does appear she is related to Charles Chapman - the only question is how. Grand daughter or (grand) niece. Out of interest who were the parents listed of Charles on his death certificate.
ScotlandsPeople is certainly better but the search appears to have lost some functionality.
You can't search the census by listing a persons birth location
The results page for marriages no longer shows the spouse surname.
Married ladies are indexed under both married and maiden names where known on Deaths but the results no longer show the second name.