She was brave, cheerful, and never let her own troubles bother her.
Literal
She [topic-は] brave-and cheerful-and, always own hardships [such as-など] [topic-は] issue made-not.
勇敢でほがらかで — two na-adjectives joined with で. 自分の苦難などは問題にしなかった uses などは to dismissively reference her own difficulties and 問題にする ('to make an issue of'). The sentence paints a stoic, cheerful character.