I have just had my girlfriend merge her account but she is away working and doesn't put time on her account very often.

If she doesn't log in do you think she will lose the pet?
eg when we got the Polar bear cub it got sent to your mail and if you didn't log on that character within 30 days it got returned to sender.

She'll be mad if she misses out. If worst comes to worse i'll just have to add time to her account for the pet.
*fingers crossed* it coincides with the ony 5th birthday whelpling pet!

From MMO-Champ:

"Q: How can I obtain the penguin pet?
A: Once you’ve successfully merged a World of Warcraft account with a Battle.net account, the penguin pet will be sent via in-game mail to all existing characters on the merged World of Warcraft account, along with all future characters on that World of Warcraft account. [. . .]"

I love the latter. It means that no matter what faction, no matter what new server I may start an alt on, I get a sort of welcome package when I manage to get to a mailbox for the first time.

Silly little bot, I love you. And I'll love the penguin, too :)