[Bear_in_RoseBear]

An interesting read! But, I think the author misses a possibility in accounting for Eowyn's training: she may have insisted on it herself, and Theoden allowed it as an indulgence to his favored niece, whom he had raised as a daughter. In other words, Theoden may simply not have had the heart to say "no" to her.

[2Jedismom]

she may have insisted on it herself

That is precisely my "gut feeling" about Eowyn!