Is my guppy ready to give birth?

I bought some pregnant guppies before Christmas all of which are pregnant.

They don't look as squared off and fat as I expected them to be (saw them online in YouTube videos a be pictures) but this one particular one, just today, her gravid spot turned a little different. Like not only could I see the eyes but also the clear pinkish flesh of the babies. Furthermore, the area right under her gravid spot has developed a distinct white line leading up to her anal fin.

Now, I saw her having a little poop sticking out of her along with this fine maroon line with a pointy tip, I panicked as I thought it was the Baby. This line is not coming out together with the poop, they are separate and please note I only feed her flake food.

Next, she was behaving a little funny, like hiding in my broken pot ornament, then when she came out she is either up at the air pump or down at the filter. She does swim around but she looked tired and lazy, letting her tail weight weigh her down each time she stopped swimming. I fed her, she did eat.

I shifted her into a pail as I have no breeder tank, she was calm for two minutes and then started swimming frantically, so I out her back in the community tank. She has not isolated herself, still swimming with the rest but occasionally going her own way. I don't know what to do. I don't want her to have a miscarriage with all the stress and neither do I want the fry to be born in the community tank and get eaten by the rest of my 10 fish!