Do you mean she eats every 2 hours all day and all night? I wouldn't worry about trying to stretch it during the day at that age...my little guy still eats every 2-3 hours during the day. We got longer stretches at night by keeping the lights dim, no noise or music or TV, and just trying to rock him or hold him instead of immediately feeding him when he woke up. He sleeps about 7 hours straight now, so I guess it worked!
ETA: After reading the other replies, I feel like I should clarify that we only tried to stretch things with LO at night if he wasn't too distressed when he awakened and we could easily calm him down by rocking or holding him. If he woke up wailing or obviously hungry, of course we would feed him.