Joyful Mother?

Mother has many meanings.  Obviously for the most part I don't fit these meanings.  But I do think that I fit numbers 6 and 14.  And sometimes I wish that was good enough for me.  And I wonder if it is supposed to be.  The Bible has some verses that deal with fertility or the lack thereof. One of these I came across recently was Psalm 113:9 which says: This verse makes me think.  Does this verse literally mean that God will make infertile women the mother of many children?  Or is it more figurative?  Is God going to give barren women the opportunity to mother children?  For instance I baby-sit for my job.  Now I am by no means their mother as defined by the first definition, but I do nurture and protect (or mother) them while they are at my house during the weekdays.  I'm not saying I am like a mother to them, only that I am mothering them while they are in my care.  Is this a fulfillment of Psalm 113:9?  I am keeping my house, and mothering children, even if they are not mine.  As they grow older and eventually don't need me anymore (because while you need a mother forever, you don't really need a baby-sitter once you get to a certain age)  I will undoubtedly have more children that I baby-sit, or I will start doing foster care.  So I will still be keeping house and mothering children.  Should I learn to accept this as the fulfillment of my desire for children?    mother 1  (ˈmʌðə)
— n
1.	a. a female who has given birth to offspring
	b. ( as modifier ): a mother bird
2.	( often capital, esp as a term of address ) a person's own mother
3.	a female substituting in the function of a mother
4.	archaic chiefly  ( often capital ) a term of address for an old woman
5.	a. motherly qualities, such as maternal affection: it appealed to the mother in her
	b. ( as modifier ): mother love
	c. ( in combination ): mothercraft
6.	a. a female or thing that creates, nurtures, protects, etc, something
	b. ( as modifier ): mother church ; mother earth
7.	a title given to certain members of female religious orders: mother superior
8.	Christian Science  God as the eternal Principle
9.	( modifier ) native or innate: mother wit
10.	offensive , taboo , slang chiefly  ( US ) short for motherf*****
11.	be mother  to pour the tea: I'll be mother
12.	informal the mother of all …  the greatest example of its kind: the mother of all parties
— vb
13.	to give birth to or produce
14.	to nurture, protect, etc as a mother  \