Marcia, I'm sorry for your recent loss. WikiTree has standard ways of displaying names and the closest to what you prefer would be Marcia L. (Linberg) Snyder. The way to have that is to edit your profile and enter the following in the name fields:
Formal First Name Marcia
Preferred Name Marcia
Middle Name L.
Last Name at Birth Linberg
Current Last Name Snyder
I hope this helps.