Wendy signs her paintings with the signature mark “W Roberts” including a floral motif in the W. She also has a symbol floral-like motif with just initials. The current logo-like signature was a design choice to make at least part of her name legible but to keep traits of her early mark (which was a “W” surrounded by a lotus design and caligraphic marks and sometimes a date of creation as seen below). The addition of her last name may make it easier to figure out identity if paintings are inherited or otherwise transferred without accompanying information in the future, but without ruining the painting’s design. It is a compromise between a symbol signature (such as Albrecht Dürer, J.M William Turner, Toulouse-Lautrec, Dante Rosetti, among many other examples), and the majority of artists who sign their names or part of their name to make it easy to read. In rare circumstances of exceedingly small paintings, the pictoral signature or just the stylized W is used with the main priority being to keep the signature in harmony with the painting. Sometimes the signature is placed on the edge. Always the signature is in service to the painting – the image takes precedence and the signature is meant to be harmonious..

Examples are below:

From 2010 until about 2015, this was a typical symbol signature with a waterlily motif, initials and date.
Eventually Wendy dropped the date and made the symbol more compact, but it still has the waterlily format
2015 – current: the waterlily symbol has been simplified, and is now more like a lotus. Last name is legible.
The color of the signature must always be harmonious with the painting.
In extremely small pieces, the signature may be truncated to a simplified W and Lotus Motif
Sometimes on smaller pieces or pieces with finished edges, the signature is on the edge.
The signature is on the edge on some pieces, especially on smaller pieces