Maybe. Possibly. She might still be able to fit through that entrance. However, she's definitely not going to be able to move anywhere on her own, that's for sure.
BTW, I'm literally trying to write as little as possible each time here. I just find that when I get started my brain doesn't want to stop adding details.
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Mary hung there still. It had been three hours since the spell was cast, and her stomach --now reaching halfway down her shins-- was feeling as though it would be quite some time before she was able to move it again. She had been in a daze of pleasure for the past hour since the Sorceress had decided to poke at her massive (and massively sensitive) belly, but she started being able to re-focus her attention when she noticed that the bloated feeling was starting to subside.
She looked up over at the Sorceress to see if she had done anything, but the Sorceress just giggled. "What's the matter my captive blob? Is the spell starting to wear off?" the Sorceress inquired. "I- I think so, Sorceress," Mary stammered out. She had a flurry of emotions going on all at once: relief that she wasn't going to be kept here for days on-end, disappointment that even with this magical inflation she was stopping at a point in her appearance that she had seen women get to under their own power, and extreme arousal that she probably currently weighed more than the last three people she'd had sex with combined. The arousal was winning out for most dominant emotion at the moment.
"What are you going to do with me now, Sorceress?" Mary asked. The Sorceress thought for a bit before responding, "It's been quite some time since I last had as willing of a test subject as yourself." She paused while Mary practically panted with excitement. The Sorceress had been watching the whole event unfold carefully. She knew the look of a horny girl when she saw one, and figured she would test her subject a little further. Her mouth curled into a smirk and she floated over to rest herself gently on top of Mary's unbelievably large gut. Mary gave another wince of pleasure as the Sorceress settled there. The Sorceress spoke her decision, "Since you've been such a good, willing little subject, how about I let you decide what you'd like me to do with you?"
Mary's mind spun for a moment. What did she want to do? She thought on it for a moment before she felt that her mouth was already moving. Curious, she thought, I'm not trying to speak right now. She tuned in to what her own mouth was saying, and realized she was currently describing the dirtiest, most obscene sex fantasy that she could ever have come up with for someone of her size. Well, I guess that's the conclusion I was going to come up with anyway, she thought, would have been nice for my mouth to wait for me to decide on it, though.
The Sorceress listened to the rather absurdly deviant game-plan that Mary had just come up with and smiled. She thought for a moment, do I really want to indulge this helplessly horny girl or should I come up with my own plan? She was in so deep of thought that Mary could practically see her mind buffering. The Sorceress slid up closer as she made her choice, "We will do all of that and more, my squishy little captive." With that, the Sorceress undid the restraints that were holding Mary in place and floated her back over towards the bed.