また、親しい間柄であることから、暴力の被害を受けやすく、その被害を訴えにくいという実態がある。

、、、。

Also, because the relationship is a close one, victims are not only more vulnerable to violence but also find it harder to report the abuse — that's the reality of it.

Literal

Also, close relationship [copula-である] thing [from-から], violence [gen-の] damage [obj-を] easy-to-receive-[and-く], that damage [obj-を] hard-to-appeal [quot-という] actual-state [subj-が] exist.

A formal compound sentence stacking two ~やすい / ~にくい facts (easy to suffer / hard to report) under a single topic, then summing up with という実態がある 'there is the reality that...' という here is the defining/summarizing quotative, packaging the preceding clause as a label for the noun 実態 'reality.' であることから is a formal causal: 'from the fact of being X.' 受ける 'to receive' is the default verb for being on the receiving end of abstract things — damage, influence, education.