was just thinking the same thing regarding the soul mate thing - either you have misunderstood the meaning of soul mates or you are being a bit clingy, possessive and dramatic, i mean, 'bestest mate', 'your rock'?
she is a child, you should not be putting all that onto her... it should all be the other way round.
she will be able to sense your weird behaviour but she will not understand it and be confused and possibly upset by it.
i understand you will miss her, thats obvious, but getting sulky and tearful over 5 days away is totally over the top.
i think this time apart might be good for you, help you regain some perspective on life...and i would suggest going out with pals more than twice a year, as i think spending all your time with your child, is what has created this situation