I would recommend a book:
"Your 6 Year Old" or, "Your 7 Year Old" which can be found on www.Amazon.com
Here is a review:
"When you know what behaviors are "normal" for your child's age you can relax, stop the worry, and focus on appropriate solutions. This whole series of books accurately defines the ages and stages of children. These books keep your expectations realistic and allow you to avoid anger caused by a lack of understanding of your child's developmental stages."
I have a 6 year old. My daughter does that too... a girl can be quite emotional, like a woman on PMS. Then there are their personality traits...my daughter "tended" to be a "perfectionist." So, she would fret over things when it did not go her way, or if things were not as she imagined in her cerebral sophisticated head, or if her ideas were not plainly executed as she hoped....and YES MY DAUGHTER CRIES/WHINES TOO, and turns into a soppy wet mess with a sad forlorn face with wet eyelashes and tears dripping down her face.
okay. So what? WELL, me & Hubby know my daughter well by now... and over the years, we have taught her that she does NOT have to be "perfect" nor do we expect her to be perfect... and that just having "fun" and just "doing your best" is good enough and EQUALLY great.
The thing is, each daughter is different. And some are just emotional this way. My friends who have girls, say the SAME thing about their daughters too.
For us, we don't nit-pick my daughter about it... she's not doing it on purpose, she is just being "raw" and expressive about her feelings...in no way, do we want to "stifle" her. BUT, we always make a point to talk with her, to see where she is at, what is causing difficulty... and WHY is she crying. Sometimes, she says she doesn't even know why she is crying.. .and then she'll start to laugh because then she realizes how silly she is being etc.
The thing is, well, if you get irritated at her... then it's not going to solve anything... it just gets the child more upset, and then they will get a hang-up about themselves thinking that you like the other sibling "better" or something. My daughter says that to us, whenever we get "irritated" with her bawling. BUT, SO we have to remember how terrific of a girl she really is... and it's OUR attitude that needs to be tweaked... not my daughter... she is too young to at-will CONTROL her every emotion. And sometimes it is ME that is simply having a moody-day. Myself alone.... so then I am just irritable anyway. NOT my daughter's fault.
I remember being that way when I was young... and my Mom getting irate at me for every little emotion I had or felt... and what a PAIN I thought she was... I remember thinking to myself "HOW can my Mommy be so cold...." And she would CONSTANTLY say "kids weren't that way when I was a child..." How hurtful. It also became a sore-spot with me... because I felt (at this young age) that NOTHING I did was "good enough" for my Mom and whenever I did something I would feel let down, because it was letting HER down....I could feel the "vibes" off of my Mom... I could read her face & voice perfectly... even at this young age, and I knew when she was disappointed and then annoyed... in me.
Anyway... well kids are kids. Even little girls have hormones. And, your girl probably just has her own personality and temperament... my girl is that way and you know what? Because of her "sensitivity"...my girl is REALLY a bright, creative, wise, cerebral, original, and unique little girl... and I am glad she is who she is. BUT, as her Mom...I have to help "teach" her how to NAVIGATE & 'PROBLEM SOLVE' "difficulties." THAT is the thing they need to get adaptable at. Ability to adapt. Ability to cope. Ability to not feel let down.... THAT is the trick to teach them.
Some days my girl is so hard to please too. BUT, at school, she is an exceptional student, and is actually the BEST student in her class. So, at home, this is where my girl "releases" all her pent up "stuff." That's fine. My level of tolerance and "annoyance" has to flex too. I'm just glad my girl will vent to me and express herself and tell me her most personal feelings... THAT is to me, a "golden" thing.
All the best,
Susan