I live in the UK and say Eh-vuh-lynn, and I’ve never thought that would cause an issue. I think the only time I have heard [name_f]Eve[/name_f]-lynn is on a male character too, and on Downton [name_u]Abbey[/name_u] too, so not a current representation either. I think even with nn [name_f]Evie[/name_f] (EE-vee) it wouldn’t be a problem.