ignoring her crying is not how i would ever handle a situation with my children. ignoring in my opinion is laziness on a parents part, when you ignore unacceptable behavior your re-inforcing that you aren't bothered by that behavior. if your kid did something really fantastic like write their name for the first time...would you ignore it...NO. you would get all excited, hug em, kiss em, tell them how proud. same goes for teaching kids how NOT to behave. how will she know how to act if you don't tell her? sounds like a classic case of her trying to learn her boundries. kids understand (yes...even as young as 14 mos.). passing out is scary to me and i would say not normal either regardless of what an MD says. all my opinion of course.
ooops...clarify for me...why is she crying for so long. the discipline part of this may not apply. is she colic or does she have health issues that are causing the crying. is it just when she's tired, etc?