Thread by @DefiledGod

In bhAgavata and harivamSha, rukmiNI worships umA for gaining bhagavAn as her husband.

There is a reason behind this, which is connected to the greatness of the Govinda nAma+

नमस्ये त्वाम्बिकेऽभीक्ष्णं स्वसन्तानयुतां शिवाम् । भूयात् पतिर्मे भगवान् कृष्णस्तदनुमोदताम् (bhAgavatam 10.53.46)

[Ambika, who confers auspiciousness! I offer my repeated salutations to you, along with your children ganesha and skanda! Let Krishna become my husband!]+

It is of course, true that umA-vrata yields a good husband and rukmiNI observed it. But there is also a special guNa behind her worshipping umA.

In padma purANa, umA herself reveals it by worshipping bhagavAn as follows+

कृष्णकृष्ण जगन्नाथ नारायण दयानिधे | दास्यस्मि तव देवेश पूर्वभावे यदूत्तम
 
[umA: kR^iShNa! I know who you are, master of the Universe, nArAyaNa, ocean of dayA. who rules the gods by his supremacy, who uplifs the yadus by his accessibility! I was your servant in a former birth.]+

त्वया दत्तं वरं मह्यं तदा कौशलपर्वते | सौभाग्यं शाश्वतं सौम्य प्रसन्नेन महात्मना
 
[Being pleased by my services, you who are the sAttvic god, who are firm in blessing your devotees, granted me the boon of perpetual auspiciousness of being a consort of mahAdeva]+

As pArvati performed services to bhagavAn for attaining mahAdeva, rukmiNI worshipped her for attaining bhagavAn.

bhagavAn worships those who worship him. He worshipped mahAdeva for a son. devI too follows his lead and worships his bhaktAs. This is why rukmiNI worshipped umA.

तव मुख्यं सहस्रस्य नाम्नामन्यतमं विभो | गौरीसौभाग्यदातेति मुनिभिः परिकीर्तितम्
 
[The munIs like sanaka etc., declare that one primary name out of your infinite names has given perpetual wifehood to me, who am called “gaurI” (by Shiva) due to my beautiful white complexion.]+

It is said that pArvati is referred to as "gaurI" by mahAdeva whenever he wants to compliment her beauty. So, she mentions that name of hers signifying that her beauty liked by mahAdeva is granted by bhagavAn.

Now what is this one primary name of bhagavAn that she recited?+

In the next line itself she says, तत्सत्यं कुरु गोविंद - the name is "Govinda". One who rescued the Earth as varAha, one who is a cowherd.

pArvati performed services to bhagavAn by meditating on his easy accessibility+

The idea is, mahAdeva is a great god. She was merely a woman. To attain such a lofty one as a husband, she meditated on bhagavAn as "Govinda" - who descended as a lowly boar for the sake of bhU devI who was covered in filth, who is now a cowherd -- and performed services+

As the helpless Draupadi protected her honor by "Govinda" nAma, pArvati who felt helpless in attaining a god as her husband, gained mahAdeva by that same nAma. And thus rukmiNI herself worshipped her for her devotion to bhagavAn.

This is the greatness of the govinda nAma//