" In a dilapidated Boston rocker sat a plump little woman. She wasn’t Mrs Whatsit, so she must, Meg decided, be one of Mrs Whatsit’s two friends. She wore enormous spectacles, twice as thick and twice as large as Meg’s, and she was sewing busily, with rapid jabbing stitches, on a sheet." From A Wrinkle In Time.

Could I replace "decide" with "conclude" here?

What does "jabbing stitches" mean? Is "jabbing" a participle adjective?

I would appreciate it if you would help.


Could I replace "decide" with "conclude" here? Yes

What does "jabbing stitches" mean? stitches she made by poking the sharp needle hard and quickly into what she was sewing.

Is "jabbing" a participle adjective? Yes