I think this could be her in 1891 (in 1881 Lily has an 8 year old brother called Jacob)
Queensberry Square Dumfries.
Alexander Lindsay, head, married, 24, Hawker, Tranent East Lothian
Lilly Lindsay, wife, m, 24, Hawker, England
Alexander Lindsay, son, 2, Dumfries
Jacob Rae, visitor, u, 18, Hawker, England