Need POV advice.

That's first person. You might change it to: Maggie approached me...

The POV is OK, I'm just having trouble understanding who is speaking in the first sentence. Is it the narrator or Maggie?

Yeah, I agree with ferret. That's a place where you actually need the dialogue tag to make the speaker clear.

What is third person adapted POV?

There's first, second and third person POV. Within third, there's omniscient and limited. Beyond that, there's sometimes levels of depths within limited, with some authors talking about a cinematic POV (where the POV skims the surface) and others talk about deep POV (where the POV gets deep, deep into the character, as deep as first person, except using he/she instead of I).

But, as noted, the example you gave is first person, because it's "I" speaking, although we can't tell from the snippet who "I" is.

Getting beyond the terminology, I'm not clear on the gist of the question. If the narrator is one person, then the story is told through her POV, and no one else's. I can't quite picture how the narrator (who's not God) can tell a story through someone else's head. Do you mean the protagonist is one person, and the narrator is someone else? I'm not sure what you're trying to accomplish.

JD

"It is basically a case of the narrator, Emily experiencing the world through Maggie's POV."

Like a chapter where the narrator kicks off.
I can see the problem here. If you switch to 3rd person, then it'll read like an objective narrative, rather than Emily subjectively reconstructing Maggie's experience.

If that extra filter is needed, I can think of several solutions I've seen used:

• Stick with 1st person - perhaps this is a good example of a story that's easiest to tell that way.
• Make the section a journal entry. "Emily's diary, 12/2/1902: Maggie is missing an arm! It seems..."
• Frame the section with "It took a while for Emily to get the story..." and "...or, so it seemed to Emily, putting together Maggie's ramblings."

If you want to write something that is happening at the same time as the main frame, just switch over to the third person and write in common time as apposed to the past tense.