Final answer:
Monique and Blake are in the stagnating stage of Knapp's model of relationship stages, which is marked by superficial communication and a lack of growth.
Step-by-step explanation:
According to Knapp's model of relationship stages, Monique and Blake appear to be in the stagnating stage. This stage is characterized by a lack of growth and the feeling that the relationship is at a standstill. Communication tends to be minimal and superficial, avoiding deep or contentious topics that might bring up underlying problems. If this continues, the relationship might transition into the avoiding stage, where partners intentionally avoid each other and reduce their interactions further, possibly leading to the final stage - termination of the relationship.