If something unexpected (and incredibly unlikely) happens, should we take it as something deeper or just a fact of life?
Something highly unlikely and very positive happened at a very bad and negative point in my life, this event arguably showed a very different future to the one I imagined.
The Buddha taught that there are 5 natural laws (Niyamas), that causes physical and mental events to take place;
1. The seasonal laws (Utu-Niyama) related to temperature, seasons and other physical events
2. The biological laws (Bija-Niyama) related to seeds and physical organic order
3. The physical law (Citta-Niyama) related to the processes of consciousness, or to the nature of consciousness which recognises objects etc.
4. The Kammic law (Kamma-Niyama) related to the law of Kamma, (good deeds and bad deeds and their results)
5. The Natural laws (Dhamma-Niyama) related to certain events: the general law of cause and effect, causality conditionally and unconditionally
Trying to further interpretate it will just carry over into imagination. Only a fully enlightened Buddha can know the intricate workings of kamma.
Don't know how to read into it, or how my actions should be after the event, should I embrace the change?
You could treat it as you would do in Vipassana meditation, i.e. to treat all physical and mental objects the same way.
You can also use it to further deepen your practice. If you have increased time and energy, you could practice Dana and do e.g. volunteer work. Its really up to you.
The Buddha taught that one should do good, practice the Dhamma and lead a pure life.