Thank you for kindly providing your birth data
Losing a parent is surely one of the worst things that befalls man...
The chart is diurnal, so Venus is the primary significator of your mother - all the more so, as she is also posited in the 10th(mother). Venus is afflicted by a close applying square (within three degrees orb, in the bounds of the same planet Venus which represents a particularly powerful bond!) with contrary to sect/domain Mars who rules the 6th and is posited in the 12th, having authority in the 8th by kingdom. I assume she had suffered from Venus related illness(members of generation/belly?) for some time before she died (fixed signs involved). Mars' maleficence is further exacerbated by its position on malefic Hamal (Mars/Saturn nature).
The solar return Mars happened to land close to Venus and in the natal 10th, the cusp of the solar 5th by Alchabitius (the 5th is the 8th from the 10th, signifying mother's death). Your solar ascendant lands in the natal 5th, reinforcing this particular signification,highlighting Venus.
Another striking detail is that the lot of the mother (17th degree of Capricorn, the 8th house) is "struck" by the relocated solar return's IC (endings/death) to the degree!
By yearly profections, Venus reaches Mars (another repetition of the natal constellation!), lot of mother lands in Aries containing the ominous lot of crisis/injury/illness, handing over its matters to malefic of the sect; Saturn hands over to the Moon in Virgo.
Your profected ascendant also comes to Virgo this year, activating the Moon as the universal significator of mother (combust by the Sun in the solar 4th); Mercury becomes LOY and in your natal chart he's conjunct the lot of mother in the 8th returning to its natal position this year in the solar 4th just a degree away from the lot! This literally signifies you (Mercury) having to do with issues pertaining to mother/death/ending(s)...
Now there are other powerful testimonies, some of them have already been mentioned by others. When I find more time, I'll post a couple of other observations.
Regards,
Goran