C#, 106 97 80 bytes
s=>$" |\n /_\\\n |{string.Join("|\n |",s.ToCharArray())}|\n |_|\n/___\\\n VvV"; I don't have C# 6 to try the above but I believe it will work
Saved 7 bytes thanks to Kevin Cruijssen
Thanks to manatwork for pointing me in the right direction to save 17 bytes