You can tell her, "Happy birthday, Nanay!" (^^)
The word mother is "ina" in Tagalog.
http://www.123greetings.com/birthday/ has a lot of birth greetings cards to welcome the mother and her offspring into this world. they have teddy bears and cats on them so it is more kid orientated.
Tagalog translation of wife and mother: asawa at ina
Ina in English: mother
Gulang Ina
Tagalog Translation of SAVE MOTHER EARTH: Iligtas ang Inang Kalikasan
Tagalog Translation of HAPPY MOTHER'S DAY: Maligayang Araw ng Ina
How about a "celebration of life" party, unless the party is held around her birthday in which case "birthday party" is quite suitable.
"Nanay" means mother in Tagalog, which is the language spoken in the Philippines.
It depends on the individual mother. Some mothers may find Mother's Day more meaningful as it is a day dedicated to celebrating motherhood, while others may find their birthday more special as it marks the day they were born and is a personal milestone for them.
mother's day is about celebrating mother's all around the world and appreciating your mother for what she done for you.
"Ballads of a mother's heart" can be translated to "Malulumbay na awit ng puso ng isang ina" in Tagalog.