Yes

"Ok. That's you done"
"Wow. You really look trussed up. So how long should I give you. Half an hours seems plenty of time for Karen The Great. Don't you think?"

Half an hour in this position seems like a bad idea to you. You've never tied yourself up for more than 20 minutes at a time, and you've never been this tightly tied before. Never-mind what its doing to your lower half. By now your pretty sure you wont get loose so you shake your head 'No' wanting to get untied as quickly as possible.

"No?. OK then 45 minutes? That should be plenty of time?"
"Nnnnpppph"
"Sssshhhtt"

Hell no not longer! Shorter! The damn gag.

"OK, ok. An hour then?"

You note a little giggle in her voice. She's probably grinning from ear to ear the little brat. But as your blind and gagged you fear her increasing your time in the ropes even further. You reluctantly nod 'Yes'

"An hour it is then. Here I'll set the timer."
"Ok. Timer on. Lets sou you escape Karen the oh so amazing escape artiste. he he he he."

You hear her move around the room a bit until she sits on the sofa an flips the TV back on. The ropes digging into you. You have no idea what to do. Well she doesn't seem scared or weirded out by all this. You might as well enjoy it. It was your idea to begin with. Feeling the ropes around you sitting there on your heels in the middle of the room. Squirming a bit, not much as you don't want the crotch rope to dig in to you even more. Nipples pointing, pussy pulsing, you head fills with erotic images of being kidnapped and sold into slavery, of being used as a sex **** for others amusement...

"They always tie the girls in these films so badly. If I had tied you like that you'd be already loose."
"You know the clock is ticking sis."

Shit. Stop daydreaming! Might as well try to get loose.