I should note that I had already written out a long summary on these three issues...and then the site bugged on me, and I lost it. Damn you, internet gremlins!!
Anyway, Red She-Hulk has continued to be interestingly fun. Betty and Aaron encounter the son of the Mole Man, the Mole Monster (I would have settled on Dave). And yes; some moloid had apparently procreated with the Mole Man...and I think I just vomited in my mouth. From there, Betty and Aaron are transported to Mt. Rushmore, and discover that it's hiding another portion of the Terranometer. Then, they are attacked by digital clones(?) of the Red Skull, Loki, Dr. Doom and Ultron. There's a funny homage of Betty slamming Loki on the ground, a la the Avengers movie. Shortly after defeating them, Aaron attempts to tap into the super-computer, which results in him being assimilated into it. All the while, the clones of the four villains merge into one, potentially new enemy, Yologarch (silly name, I know).
And finally, Betty and Aaron make their way to the Nexus of Realities, and have a run in with the Man-Thing. This ends with Betty being transported into the past, where she prevents Bruce's exposure to the gamma-bomb. Only, she ends up getting exposed, and cause a new timeline to form from that point, becoming the Hulk (in name, only). #66 ends with Jennifer, who finally catches up with Betty and Aaron, as they all fight to return to their original universe, but Red She-Hulk goes über-Hulk, yet again.
Admittedly, the last issue left me feeling a bit confused in some spots, because the art didn't convey what was happening. And speaking off, between #65 and #66, there are numerous fill-in artists in each issue. It's a mixed bag; they range from rushed art to "I can see this person taking over".
As to the conclusion of this story, we'll just have to wait until July.