The idea that Rita won't 'let' her is practically a joke. Rita already let her put that implant in her body. She fought to be raised to Delta. That's as much as an invitation.

Yukio will abruptly drop to the ground, his body smothered by Strange's poison, as the force keeping him aloft vacates. Instead, Rita will feel something activate within her brain implant - a feeling that travels through her nerves replaces her own will, like complex puppet strings. Robbed of her connection to her body, Rita's perception will go blank.

Now Rita moves with that unnatural gait, that change in disposition. She turns to look at the group, and then moves towards the shop.

"Ignatius!" she calls. "I've found you..."