I'm half hoping you are going to tell me this is all normal & she'll grow out of it, but after yesterday/today it is worrying me, not least because I have a narcissistic Mum, who amongst other things uses (her very real) & invents health problems to control those around her -
I'm currently pretty ostracised from my family as a result of standing up to my Mum on this - she was hospitalised for her diabetes, probably due to her self harming in how she ate, I had DD very sick & couldn't travel & was in pieces when told she had both a heart attach AND stroke, it didn't sound right, but as you can imagine I was in turmoil, eventually making my brother speak with the Doctors & get the truth, as Mum had put a block on the Dr talking to me - turned out she'd had neither, they were keeping her in to stabilise her sugar levels
- thats just one example of MANY
So in short, I'm aware that I may well be oversensitive to this.
My worry is - DD who is a bright 8yr old, an only DC, plenty of attention, but not spoilt etc etc, does over act to get more attention still - & she is VERY good at acting - even recently owning up to being able to cry at will - she's at a Dramatic Summer School this week - haha.
I have health problems myself, but due to my back ground try VERY hard not to lay that on DD in any way, usually suffering in silence, though she is aware I am ill, as sometimes it can't be helped.
DD is VERY empathetic to wards others, so much so its even mentioned in her School reports - everyone except ME that is :( - not saying I want sympathy from her, I most certainly don't, but sometimes I need her understanding & NOT over acting anything herself & putting more pressure on me.
This week is a good example.....
I currently have sinus infection & colitis on top of my usual Fibromyalgia etc, so in short in a bit of a state, but getting on with it the best I can, but really glad I have a break this week with her in a Summer School & was hoping I could take this time to heal & recoup, without it affecting her.
She had an accident with her foot yesterday morning - she insisted the School didn't ring me to collect her as she didn't want to miss out - so I pick her up by foot as its a few streets away & I don't drive - I am currently using a stick due to balance & back problems etc - on picking her up, she appears to be in agony, very tearful, hopping etc - yet I can't understand why she would stay at School all day in so much pain, when I am streets away, at very least I could have brought pain killers
It ends up my having to carry her half the way home, something that caused me a LOT of pain, but of course i'm happy to do if she needed it - but I'm not sure she did & its making me feel awful for doubting her, but also very cross that she could play me in such a way.
on our surgeries advice we took her to A&E to be told she has sprained her foot, but she needs to put weight on it ASAP & get it moving again - she pipes up to the Dr - how am I going to get around, surely I need crutches - Dr rightly says no & DD is fine & tries to walk whilst in the office - obviously in pain, but coping - outside its a whole different ball game, she is in floods of tears & it ends up with my half carrying her to the Car where DH is waiting( to avoid a ticket)
my gut instinct is its not as bad as she's making out, but no amount of talking has her owning up, so I accept I might be wrong & feel awful for doubting her :(
7 am this morning I hear her coming, but not quite awake, eyes half shut so I look asleep, but i watch as she walks perfectly normally from her room to ours & gets into our bed for half an hour - that is without any pain killers
half hour later I get up, followed by her - & shes limping, hoping & whimpering 
so I have been quite hard on her this morning, though of course aware she has hurt herself & WILL be in some pain, so not too hard - I am deeply upset that she let me carry her home yesterday & tried to get me to carry her downstairs this morning too.
She does have other health problems too & there has been many a time my instinct tells me shes playing me, but then I feel bad :( - but sometimes I'm starting to fear I have given birth to my Mum as she can be so like her at times
is this normal at this age & if not, how the hell do I deal with it so that she grows up to be a well balanced adult & doesn't grow up as a narcissist
& also make her realise the effect this has on my own health, WITHOUT laying on the guilt with a trowel, as surely that would be teaching her that the behaviour is acceptable, as I'd be doing it myself
Aaaaghh it feels like a mine field 
if you got that far - thanks for reading & any tips, insights much appreciated :)