'Had a similar situation, although minus the pregnancy!
Got laid off unfairly, so the boss can employ his mates, no redundancy payments, no recurrent training so left well and truly in the sh1t.
Company just stuck 2 fingers up against the law and got away with it. Employment law truly sucks as it is complicated, time consuming, expensive and inefficient. Employers know this and take full advantage of it.
If your wife is with a UK company she may have a chance but overseas...forget it!