Alisa is a character found in the presets (the fifth character on the first column on the second page). She can also be found in life mode, in Spookyville alongside Casper.
Her favourite gifts (that gives the player twice the EXP of a normal gift and a unique response from the receiver) are the puppy, fox, hamster, magical neko, pajama abu and any 6-star gift (only a unique response).
She is also a 6 star gift. You might be lucky enough to get her.