Theoretical question here on relativity and black holecollisions.

Suppose a very small black hole (A) is at rest and an observer iswithin its event horizon.

Now consider that a much larger black hole (B) is approachingsingularity A at a highly relativistic speed (hence very highlyrelativistic momentum), and the two singularities collide head-on(extreme precision).

Now, by Conservation of Relativistic Momentum, the twosingularities (whether they fuse together or not) should travel inthe direction of initial motion of the larger black hole (B)because it had much more momentum.

Q: Is it possible for the observer, initially suspended withinevent horizon of Black hole (A), to escape both black holes becausethe collision would cause the 2 singularities to recede away fromher at a very high relativistic speed?

That is to say, would this bizarre black hole collision allow anobserver to escape a black hole and violate the concept of theevent horizon? If so, since not even light can escape a black holefrom within the horizon, would this imply that the observer isreceding away from the two singularities at a relative speedgreater than c? What sort of physical implications would this have,what would happen to the local spacetime? What strange events mightoccur? If this event is not possible, please explain explicitly whynot. If the observer did not escape, what sort of strange thingsmight she see when being dragged by the receding 2singularities?