No, it never enters the else branch.

Remember to mark your posts as having spoiler content when they do. What happens in your code if there is no vowel?
@KenKamau, check the random testing suite, it throws errors (not always) and it wasn't for the user's code.

System.InvalidOperationException : Sequence contains no elements
 Stack Trace
   at System.Linq.Enumerable.Max(IEnumerable`1 source)
   at Solution.Tests.SolutionSolver(String s)
   at Solution.Tests.RandomTests()

can you post your code? someone will help.