amira abase , 15 , left uk for syria with two classmates in february .
tweeted about enjoying a takeaway in islamic state ` capital ' raqqa .
also shows life pre-isis with tweets about shoes , waffles and chelsea fc .
amira , shamima begum and kadiza sultana aimed to be ` jihadi brides '
before departing , amira tweeted a picture of the three in a london park .