To get more boobie in there, I suggest this:-

1. tickle her cheek / lips to get her to "flare" her lips, like the < in the Special K "K" (so a big and wide opening)

2. while you're doing that, press your areola gently between your thumb and index finger, to "flatten" it a bit

3. when the K is wide open, shove your nipple in there quickly, pushing down with your thumb, to knd of squah more in the front of her mouth ... it's a bit odd, manoeuvring it like that, but you get used to it.

Hard to describe ... but easier to do!

Good luck!