If you lose energy, you perhap bumped into an obstacle too often. Make sure you don't bump into the houses, just make sure you're very close to the house, jump up and if you don't hear the woosh after a few seconds, press the right arrow just once. If you don't still hear anything, try moving to the right one more time and if you hear the woosh, go one more step to the right and release the up arrow key.
I think you have more than 3 lifes, at least she regenerates more often than 3 times. You cannot regenerate energy unless your energy level reaches zero. You get a bit of energy back if you send out the right presents. If you send out the wrong ones, you'll also lose energy.
Feel free to check my blog at
http://www.patrickdembinski.orgAut enim do tibi, ut des, aut do, ut facias, aut facio, ut des, aut facio, ut facias.