I love the name
Matilda; I'm not crazy about
Mat.
Some combos with mns from your pn:
Matilda AnoukMatilda FlynnMatilda Nirvana --probably a bit much
Matilda Owen --I know it's for a boy but I like it as a combo
Matilda RowanMatilda Quinn --
Quinn is one of my favorites
Matilda Sage
Others:
Matilda AudreyMatilda ChelseaMatilda Clementine (ooh I like this one)
Matilda EmilyMatilda OliveMatilda Wren