Weird egg laying; the sequel

I expect many of you have read about Phyllis (32 weeks) who was laying erratically. I put it down to workmen in the garden disturbing her and sure enough, she settled down and has been laying a normal egg every morning for about 2 weeks. Good girl!
Tuesday morning she gave me a HUGE double yolker but nothing on Wednesday morning so I checked the poo trays under the perches and there were TWO normal sized but soft eggs. Unfotunately they'd both split in the fall. So she'd technically laid 4 eggs in less than 24 hours!
There have been no workmen and nothing to upset her that I'm aware of but it has been incredibly windy and all the girls have been skittish. Lulu has been positively naughty  ::)by not wanting to come in and having to be moved from the nesting box that same night.
Phyllis is a Magpie which I believe is a Marran hen crossed with a Plymouth Rock I know the French love Marrans because they lay and eat well but wondered if anyone else has this cross and whether they have a similar problem?
I'm not actually too worried. I'm grateful for her offerings but it does seem a shame that she goes to all that effort and the eggs can't be eaten!!!

Yes she's going broody - my maran Brenda Lee goes broody at the drop af an hat egg (aptly named as then she lays sweet nothings  ). In order to stop her I have to send her to the confines of a cage for a few days and it takes a couple of weeks before she lays again. 

we have an amber link who did exactly same thing last week, laid 1 enormous dinosaur egg(double yolker) in the morning and then when we were calling them in she suddenly stopped, fluffed out and popped out a soft shell egg, and then as if nothing had happened she ran into the run and ate her corn, and then again, 10 minutes later, she fluffed up and popped another one out.  We were pretty gobsmacked.... 4 eggs in 12 hours. 

The next morning she kept going into the nestbox and looking round as if to say "I'm sure there's something i should be doing"  lol

She's laid normally since.... until this morning when she laid another huge one but so far no more soft ones