In 20 minutes, she happy tweets for 20*18=<<20*18=360>>360 times
In 20 minutes, she hungry-tweets for 20*4=<<20*4=80>>80 times
In 20 minutes, she tweets at her reflection 20*45=<<20*45=900>>900 times
Altogether, she tweets 360+80+900=<<360+80+900=1340>>1340 times
#### 1340