can a married girl perform daily pooja at her father's house (maike/porandaveedu/puttinillu )?

Maha Lakshmi is 'Maha Vishnu Vaksha Sthala Vaasini'. Maha Lakshmi resides in the chest of Maha Vishnu. If you place a lakshmi idol /photo on a wall, the wall becomes the chest of Maha Vishnu and the house becomes Maha Vishnu. There is no doubt that Lakshmi along with Maha Vishnu are there in the house.

Only money and things become depleted on transfer. But one lamp can light any number of lamps. The daughter is like a lamp and give prosper to both houses with out depletion!

The daughter in her mother's house can do her daily Pooja without break if she feels. All other members also can do Pooja as per their normal routine. The daughter is treated as Maha Lakshmi and normally never leave her parents house on Fridays to her (husband's) house. The daughter is Maha Lakshmi to both houses!

House is not a temple in the context that Agama rules are not appilcable to house poojas. Each and every one in the house can offer a leaf, a flower and a fruit and do pooja individually as per normal routine to the (Ishta) Devata!

Nanba: It can be performed at any house! All she is doing is getting Goddess blessing and it accompanies her all time. It doesn't matter in-laws home or poranda veedu, everyone is part of big family (sometime adhu vellaiku agadu). Prospering together makes it much better. Anybody can do it anywhere with real unconditional love towards the Goddess.

As part of tradition, Adhi Sankara was begging for alms and he stood before a poor family house. They had nothing to offer but just an Amla fruit. Moved by their sincerity and devotion he composed Kanakadhara Stotram to bring the blessings of Goddess Lakshmi. Place, Who, What, Time, Offerings didn't matter.

I don't know about the ritual part of it; what is her Sankalpam and what does she ask for blessings.

She can always do it, asking blessings for his father or brother. But if order of precedence is to be considered, she should take her sister-in-law's (Vadina/Anni) permission as she is the one who is in charge of the house, the LOH (Lady of the house). All such proprietries are taking her loyalties into consideration. it will be better an is mentally less burdensome for the daughter if her loyalties in the married house (mettinillu) do not come into conflict with mother's house (puttillu). Even her parents normally seek to distance her for fear of her being misunderstood even in a situation of slight conflict. They basically want her to be happy on her own, removed from the shadow of thier house (puttillu). With her mother she can always take liberty to do so, even though mother also treats her like another 'Mutta iduva' befitting her adult status.

Pooja room is a private space within the family and is not supposed to be god's place. God is accorded a place in his/her own temple, well away from human habitation. One is not supposed to build a house in a place that falls in the shadow of any temple. Even trees like Banyan (Marri) and Peepal (Raavi) being gods are not to be planted very near houses, nor should put up a house where they are located. This separation of human versus divine is observed by cognosanti.

Religion is also an expression of 'sentiments' (alternatively 'superstitions') in families. There are those who make light of such things. As long as these are honoured with empathy, it will only enhance goodwill between families. So, Lakshmi and her perambulations is an important matter in this context; and should be done keeping both sentiments in view.

Any puja one does is between him/her and God. There is no else between them. So the place, time and environment do not affect that relationship.

Neither does it help others directly. The relationship with God is uniquely personal and there is no third person in that. At highest level of devotion, there is no right and no wrong way in the relationship with God.

The rituals and superstitions are creation out of vested interests. So clear your mind from those to move up to the spiritual zone.

Do not depend and encroach into other's realtionship with God.

Pooja is to be done inside the mind. Other poojas are meaningless and waste of time. It shows the ignorance of the devotee.