In this situation, the meaning of "okkkkk" can be a bit ambiguous, as it depends on the context of your conversation and the relationship dynamics between you and your friend. However, generally speaking, "okkkkk" with multiple letters like that is often used to convey a nonchalant or indifferent response.
Here are some possible interpretations of her reply:
Agreement with Reservations: She might be acknowledging your request to talk like you used to but may not be fully committed or enthusiastic about it.
Uncertainty: The repetition of letters (k's in this case) might indicate uncertainty or hesitation. She could be unsure about how to respond or may not know how to reconnect on the same level as before.
Lack of Interest: "Okkkkk" might also be a way of politely acknowledging your request without showing much interest in fulfilling it.
Tiredness or Boredom: The elongation of the word "ok" might signify that she is tired, uninterested, or possibly bored with the topic.
It's essential to consider the overall context of your conversation and the relationship you have with your friend. If you are concerned about the change in your friendship dynamics or her response, it might be worth having a more in-depth conversation with her to understand her feelings and thoughts better. Open communication can help clarify any misunderstandings and strengthen your friendship.