○○ still does not accept me as a member of the family.
○○ does not recognize me as part of the family yet.
こんにちは。
ご質問ありがとうございます。
① "○○ still does not accept me as a member of the family."=「○○はまだ、ぼくを家族の一員として受け入れていない。」
② "○○ does not recognize me as part of the family yet."=「○○は私を家族の一人としてまだ認識していない。」
ご参考になると幸いです。
Bob still does not consider me to be a member of the family.
Bob still hasn't taken me in as a brother.
もし先住ペットの名前がボブで、後から来た犬がオスの場合、次のような言い方ができますよ。
ーBob still does not consider me to be a member of the family.
「ボブはまだ僕のこと家族とみなしてくれてない」
to consider で「みなす」
ーBob still hasn't taken me in as a brother.
「ボブはまだ僕を弟して受け入れてくれていない」
to take in で「受け入れる」
ご参考まで!