Even though Isis does bless her followers, only the wisest and most perceptive of mortals will discern that Isis is a manipulative and deceitful goddess, stroking the egos of those that have a place in her plan to become the new patron goddess of humankind while undermining any that stand in her path. Every charitable act performed by the Mother Goddess would eventually benefit her. Would that still make her interventions any less virtuous?
All a mortal may do in her realm is simply enjoy their time there, occassionally keeping Isis company and being rewarded by her depending on her whims. These rewards vary. You could simply be given free access to the realm wherever you may be, living two lives at once: Your real life in Bloodshade and the life under the care of the Numen of Fertility whenever you may have the time to spare. Isis is not possesive. The door to her realm is unlocked for any who are lucky enough to be worth gracing her prescence. There, they may witness the creativity of her mind, feeding her ego and rarely granting her unique perspectives that allows her to grow evermore powerful with the creative powers of her mind, forming what may serve to be the basis of an enviable yet humble civilization.
Despite being such a morbid being, she's somehow known for her genuine, relative benevolence, mostly expressed through her ability to protect the dreams of any being that may run the risk of having their mind perverted by other Daemons or malicious Numens, mainly Ba'alat. If there's one thing that Belistra despises, its anything that may unnaturally lengthen one's organic lifespan, mainly through necromancy although she does frown upon trans-sentientism, starving her realm of those that may seek eternal peace when they expire and require a barrier from the noise of life.
Compared to the other Numens, she's a relatively peaceful being, she doesn't enjoy taking things by force, even if she posseses the capability. She has no need for company, even though in her pocket realm, aptly named Avarice, she has an uncountable number of sentient beings and subsequently, civilizations , forced to live in her clutches until one is lucky enough to present the Numen of Avarice with something that may elicit a sense of novelty in her expansive grey matter. One might consider the Numen of Avarice to be a genie of sorts. She is bound by her code of honor when it comes to acquiring 'treasure' so when someone somehow manages to grant her something completely novel in nature, she places herself in their debt, paying them back with whatever they desire. Those that ask for her companionship or to experience her human form tend to tick her off. It's one of the very few moments where the Numen will indirectly pull out the being of their dreams from indefinite population in her possession and then morphing their appearance to imitate hers, pleasing her creditor and her integrity (unless the creditor can possibly grant her some sense she's never felt before but she doubts it). One might think it's strange for a Numen to care for something as petty as their integrity but no one knows why she resists such base offers from her creditors. Perhaps the collective sexual frustration of sentience has managed to piss off a Numen such as her. Perhaps that is the universe's greatest force.
Danu has a set of guidelines that she tells herself and abides by in order to maximize her chances of getting what she wants. Some of these are reminders for herself, others set a mindset of sorts:
Once you get what you want, never give it back.
Open up negotiations with the thought that you have them wrapped around your finger.
Frauds deserve death
Always keep a list of your contributors. You never know what they might offer the next time I drop by.
So long as I get what I want, time is not a precious commodity.
Always inspect the product before making a deal
Everyone has a price, unless they're a rival or sentimental.
Greed drives the omniverse