1867 — Antigone is born in Luxembourg, the third and final daughter to Mr. and Mrs. Baudelaire.
1872 — Her first act of magic occurs during a tantrum when she rendered her governess, the source of her upset, only capable of making duck noises.
1874 — Léonie, Tig's eldest sister, starts school at Beauxbatons.
1875 — Due to her father's job requiring he spend most of his time in Britain, the family purchase a country home and make it their main residence. They return to Luxembourg annually at Christmas and summer. Tig starts learning English.
1876 — Ligeia goes off to Hogwarts. Tig is pleased to have her parents to herself though she privately misses fighting with her sister.

1878 — Tig's Hogwarts letter arrives and she ends up sorted into Slytherin. Her English at this point is good enough that she doesn't struggle often with vocabulary. She becomes fast friends with Brynn Malfoy.
1881 — Tig picks up Arithmancy, Ancient Runes, and Divination. She also develops her first crush on a Slytherin boy who plays quidditch.
1882 — She is betrothed to Tiberius Lestange. She throws a tantrum but it doesn't change anything. Tig is made prefect. Meeting her betrothed does not change her feelings about the match and she decides she hates him simply on principle.
1883 — She experiences her first kiss. Her OWL results are rather average.
1884 — To her great dismay, Brynn does not return for her final year and instead goes to finishing school. She continues with Defense Against the Dark Arts, Potions, Transfiguration for NEWTs, and picks up Alchemy. Tig manages to get away with turning Head Girl, Ellory Pendergast, into a llama and considers it one of her greatest achievements in life. She still hates the idea of her betrothal, even when Tiberius sends her a kitten. She names it Moselle and quickly comes to adore it. She does not adore Tiberius.

1885 — Moselle has kittens. The Hogwarts Coming Out Ball is canceled and Tig is devastated, some weeks later she marries Tiberius. She still doesn't like him, but she finds marriage is better than she anticipated and likes being able to chaperone other girls.
1886 — Tig and Ellory end up in a fight of sorts at a mutual friend's tea party. Tig is hexed and has sardines flying from her nose while Ellory is turned into a warthog. As a result, she is invited to tea by Mrs. Pendergast who has her use the Cruciatus curse on Ellory and then threatens her with the same curse if she ends up in another altercation with Ellory. Shortly after, Tig is sent off to Mrs. Pendergast's finishing school but she only stays a few weeks as Tiberius brings her home as soon as it becomes apparent that she is expecting. In September, twin girls Imperatrix and Cleopatra are born. After marital turbulence that is mostly her doing, she decides absconding to Europe on a quest to clear her head without telling anyone is a good idea. While AWOL, she gains a blackmailer and in a desperate attempt to save her own neck, kills her blackmailer and train full of other muggles by blasting a hole in a bridge and derailing it. Upon returning home she finds herself forced into taking an Unbreakable Vow.

Now that she has two daughters, precisely nothing has changed for Tig, she doesn't really want to deal with them. Then there's that Unbreakable Vow...