Scrophularia nodosa, Common Figwort, is a native perennial wild flower and often grows in woodland. Sounds perfect for your situation, do keep them!
Could C be Jasminum beesianum? Looks like 6 petals to me, Oleander only has 5.
Nope, still nothing there. You can't post photos from an iPad, I believe.
I've never seen a pink one, sounds nice. I have purple and white, and sometimes the progeny is purple-and-white streaked, which I love.
Duplicate - see other question.
I wouldn't buy it, I know what I put into my green bins! (Not Fallopia japonica though, I don't have a problem with that!)
Is it an indoor one in a pot, or one growing in the ground in a garden?
Don't agree Verdun, leave them as long as possible. They sometimes last right through the winter and still look good.
Definitely a speedwell. You can just see a blue flower in the photo. Can't tell the species from this though. Veronica filiformis is the commonest as a weed of lawns.
Photo doesn't enlarge, but looks like Woody Nightshade, Solanum dulcamara, to me.