It might help to remember that the Moon also signifies one's
expectations and needs from/towards another. If a mother's chart shows conflicting aspects (via synastry) to the child's Moon, she may not come up to their expectations or supply their needs in that particular area. Their own 'well-aspected' Moon means the aspecting planet inherently fulfils their own needs/expectations from within themselves, and not only that expected from the female parent.
Your friend with Moon in Virgo has it in the most discriminative sign of the zodiac. It separates the chaff from the corn, yet can be very critical in doing so. It can dish out its criticism, yet receiving (Moon) it even when well-intended? Where is Virgo's need for perfection satisfied if the child can only react (Moon) to what mum doesn't have that their needs require, rather than what she does?
Black Moon Lilith to Moon can bring its own issues concerning 'a (non-existent) natural bonding' to/within the biological mother relationship. Maybe the friend with Chiron conjunct Moon reacts to that 'imperfection' in one's internal nature, which 'hurts'.
Moon conjunct Mercury ( in Virgo?) trine Neptune aligns with mental/emotional factors. In 7th house could it imply an 'everyone is against me' attitude, through which one escapes into and lives in one's own world?
An easy aspect between Sun and Moon can suggest a good relationship between the parents themselves. If the child sees this expressed in them, it could feel them 'ganging up' on his/her own harsh aspects in the chart.
Do the individuals mentioned all feel (unable) to live up to mum's expectations of them???