but there are a few reasons. She may have retired, she may have requested no more reviews, she may be only seeing regulars that have already reviewed her and they won't get VIP days for reviews. If you have concerns, look at her last posting on P411, that will help let you know if she is still active. If she hasn't logged in there in a long time, she is either no longer active or wants no more reviews. PM her last reviewers and ask them is one way to get some intel on her.
SwimWhen considering a new provider... Considering reviews, how old is too old?
I've been considering a few providers... One in particular has good reviews and listed on P411. No BP listings. Her last review however on this site is almost 3 months old. Is that too old?
Perhaps she is very low volume provider? Or just has some regulars and not many new.
I'm not sure how to interpret this. Maybe I'm making a bigger deal out of it
Just to clarify... I'm talking about the date of the last review, not the age of the provider.
I'm not sure how old most guys say is too old. If it were me and she didn't have a review for a year but plenty of solid reviews before that I would probably ask her about it. Maybe ask if she had a current photo or "selfie" she could share to put your mind at ease. Just be casual about it so she doesn't get offended (blame it on nerves being a newbie maybe)
I think there are a lot of reasons a girl might have gaps in her reviews. She might have took time away for a job, a child or just focusing on other interests.
I also think you're right in thinking that the longer a great girl is around the more repeat visitors she probably has.
Also, keep in mind that out of all the gentleman she may meet with it's my experience (and I've heard from other women) that it's a very, very small percentage out of those that actually write a review. Probably somewhere between maybe 1-5% depending on the area and her target market.
I'm sure some guys will be along soon to give you their perspectives 
but there are a few reasons. She may have retired, she may have requested no more reviews, she may be only seeing regulars that have already reviewed her and they won't get VIP days for reviews. If you have concerns, look at her last posting on P411, that will help let you know if she is still active. If she hasn't logged in there in a long time, she is either no longer active or wants no more reviews. PM her last reviewers and ask them is one way to get some intel on her.
Swim
But it has never affected my decision about her unless the reviews were over 1 year old. There could be a ton of reasons why there isnt anything new about her. I rarely read reviews anyway but thats me. Worst case you can shoot her an email to check to see if she is even still in the game.
Is PM the lady. If there's no PM button above the profile, it means she's no longer active with TER, suggesting she's out of the game. If there is, it means she's still in the game. If she responds, you can easily mention that she has no recent reviews, and take it from there.
I'm pretty sure I've had a three month gap in reviews before.