Surprised by the gift, my mother was speechless (participle phrase won't take a conjunction)
My mother was speechless, surprised by the gift. (could use an (and/but conjunction).
She was taller than most, noticeably taller than her brother.
versus
She'd lived in Seattle her whole life, grew up there.
She was late for work again, arrived 10 mins late.
Technically why do the last examples need the coordination in contrast to the other examples where it appears optional.
"grew" and "arrived" are not participles here. The "mother" sentence means that your mother was surprised, whereas you can't say "she was grew up" or "she was arrived". The "taller" sentence is different in that it does not involve a verb form in the second part.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
"grew" and "arrived" are not participles here. The "mother" sentence means that your mother was surprised, whereas you can't say "she was grew up" or "she was arrived".
The "taller" sentence is different in that it does not involve a verb form in the second part. Strictly I would say that the sentence as you have written it is not correct, but it could be allowed as a kind of abb