。
I found out that she is kind.
Literal
She [topic-は] kind is [quotative-と] [said-いう] thing [subject-が] was-understood.
The pattern ~ということがわかる means 'to come to understand that, to find out that.' The quotative と marks the content of what was understood, いう ('to say') nominalizes it via こと into a 'the fact that' construction, and わかる ('to understand, to become clear') provides the realization. The polite ました makes this a formal report of the discovery.