I haven't watched the latest episode, so I'm surely missing some fresh info, but this is how I understand it:

Ophelia is the architect, but she is limted

Thanks to the Darkhold and Dr Radcliffe, she designed the Framework, but can't (or won't) modify it further than it's current iteration. This is comparable to the Matrix (from the famous 1999 movie) where machines can send agents (aka. security protocols) to interact with the virtual world, but can't alter it in a way that would not be intended by its design. As the Framework replicates the real (MCU) world, Ophelia can't alter the reality of it, so she can't create Hydra agents out of nothing, add/remove environment elements, give herself or anyone Inhuman powers... because that wouldn't be possible in the world the Framework tries to replicate.

She is able to pull in and out of the Framework because she has "admin privileges" and it was intended in the Framework design to be able to "connect/disconnect" people.

WHY is she limited

Whether she is limited by the Framework, her own programming or something else is not known, but I have several non-exclusive interpretations:

• The Framework is in a finished state. She can't alter its "source code" any further because it would mean starting from the beginning.
• Any alteration to the Framework requires a lot of work/time. We have seen she can't do "Darkhold" tasks instantly or remotely, she has to physically interact to alter reality or the Framework. Whether she has to code or "stitch with her hands", it requires a dedicated task that would take a long time.
• Her programming doesn't allow her to do this. She is bound to it (we saw that even killing Dr Radcliffe was a logical decision made from her programming), and maybe altering the Framework is possible, it would go against her programming.
• Maybe she sees it as a simulation with initial parameters and want to see the outcome, even if this simulation was perturbed by the introduction of Daisy and Simmons.

I haven't watched the latest episode, so I'm surely missing some fresh info, but this is how I understand it:

Ophelia is the architect, but she is limited

Thanks to the Darkhold and Dr Radcliffe, she designed the Framework, but can't (or won't) modify it further than it's current iteration. This is comparable to the Matrix (from the famous 1999 movie) where machines can send agents (aka. security protocols) to interact with the virtual world, but can't alter it in a way that would not be intended by its design. As the Framework replicates the real (MCU) world, Ophelia can't alter the reality of it, so she can't create Hydra agents out of nothing, add/remove environment elements, give herself or anyone Inhuman powers... because that wouldn't be possible in the world the Framework tries to replicate.

She is able to pull in and out of the Framework because she has "admin login privileges" and it was intended in the Framework design to be able to "connect/disconnect" people.

WHY is she limited

Whether she is limited by the Framework, her own programming or something else is not known, but I have several non-exclusive interpretations:

• The Framework is in a finished state. She can't alter its "source code" any further because it would mean starting from the beginning.
• Any alteration to the Framework requires a lot of work/time. We have seen she can't do "Darkhold" tasks instantly or remotely, she has to physically interact to alter reality or the Framework. Whether she has to code or "stitch with her hands", it requires a dedicated task that would take a long time.
• Her programming doesn't allow her to do this. She is bound to it (we saw that even killing Dr Radcliffe was a logical decision made by her programming to "help" him), and maybe altering the Framework is possible, it would go against her programming.

Edit: In the light of episode 4x19, we can see that:

• She can disconnect at will without damage if her body is damaged in the Framework
• Her body appears to be biologically standard in the Framework (she is not an android there). So if she died in the Framework she may die in the real world too.
• Her programming (and especially the "protection of SHIELD agents" directive) prevent her to harm people from SHIELD if they do not pose a direct threat to the Framework. Daisy and Simmons now are. The Framework itself is her way around that (with project Looking Glass).