Can we say "the current one" in Past

[Sammy Sam]

Can we say the following.

She needed to find a new hairstylist? She was unsatisfied with her current one.

Can "the current one" be used while talking about past events?

 

[emsr2d2]

Can we say the following?

She needed to find a new hairstylist. She was unsatisfied with her current one.

Can "the current one" be used while talking about past events?

Yes.
Note my corrections to your punctuation.