Deleting Instagram comment?

I accidentally posted something on my sister-in-law's page and I would rather it not stay. She does not know I am on Instagram and I do not think she would guess me by my name, but perhaps by the comment. (We are not friends or even civil.) I looked on Google and past Answers and found nothing effective. I have an Android and I looked for he rascal, I tried talking and holding and I even tried swiping it left.

Thank you.

Tina2019-01-06T13:20:23Z

How to report and delete an Instagram comment

Launch Instagram from your iPhone Home screen.
Go to the photo or video that has the comment you want to moderate.
Tap the Comment button just like you would to leave a new comment.
Scroll to the comment you want to moderate.
Swipe from right to left to reveal the Trash can button.
Tap the Trash can button.
Choose if you simply want to delete the comment or if you want to report it for abuse.