When someone says "mothers should be like this", and I can't do that, I feel like I am being accused by them.
I feel pressured when someone tries to tell me how mothers should behave and I can't do as they say.
ご質問ありがとうございます。
① "When someone says 'mothers should be like this',"=「誰かが『母親はこうあるべきだ』と言うとき」
"and I can't do that,"=「そしてそれを私が出来ないと」
"I feel like I am being accused by them."=「その人たちに私は責められているような気がする。」
② "I feel pressured when someone tries to tell me how mothers should behave"=「追いつめられた感じがする、母親はどのようであるべきか、と誰かが私に言おうとすると、」
"and I can't do as they say."=「そして彼らが言うように出来ないと。」
ご参考に。