Yeah, I would nudge, too.
Elizabeth is really super nice and gave me absolutely invaluable advice for my book. We spoke on the phone and corresponded several times, and her insight was fantastic. She was so positive and smart, and had several other people read my book before she called. I haven't heard from her since July, so I'm assuming she ultimately decided to pass on my project even though she never said no (I just never heard back from her after our last email, which is kinda strange, but I understand she's very busy) but I feel I have a much stronger book now with her help, so I've started querying again.
That's my experience with OE, and they seem very credible.