Potty Training Update

So, I think we are getting somewhere with potty training, but I am still finding myself hating the whole thing. I really haven't put a lot of effort into potty training. We talk about it, have tried going with just undies a few times with no success, offer her the opportunity from time-to-time, read books about it, but we have never really pushed it too much. Several days ago (okay, maybe a week ago now- my days all run together) we were at playgroup and one of Katelynn's friends told her mommy that she had to go potty and off they went. Katelynn talked about this for days after it happened, how Ellie had went potty with her mommy, and I kept mentioning how great it was that Ellie remembered to tell her mommy that she had to go. Then starting with that day in the bath, Katelynn has started randomly telling me she has to go. In the past three days she has went potty after telling me she has to go at least twice a day. Today she went six times! This is great, right? Well, sort of. The problem is that the only times she goes are when she is trying to get out of doing something she doesn't want to do. She went twice today before her nap, once during dinner when she was trying to not eat any dinner and play instead, and then three times before bed. Does anyone else find it unusual that she seems to go multiple times before bed within a 5-10 minute window? Jonathan and I are at our wits ends on what to do with this situation. It's almost as if she is purposely not completely emptying her bladder so that she can get back up and go several times when she is supposed to be going to bed. But, really is our 2-year old THAT smart? Sometimes I think there's no way, but I have no other explanation for it. We have tried several things to try and eliminate this- telling her she only gets on treat no matter how many times she goes potty before bed, after she goes the first time reminding her that she only goes potty once before bed and recommending that she sit on there a bit longer and see if she has anymore, etc but yet every night we are faced with the never-ending battle of a 2-hour bedtime ordeal which almost always ends in her crying because we finally just have to tell her that potty time is over and she has to go to bed. She cries as if she's in pain and pleads that she "feels pee-pee". We don't want to discourage her from continuing to go potty, but my goodness- 2 hours worth of bedtime rituals and on and off the potty is getting exhausting for all of us, and of course Katelynn has that same stubborn streak that both her daddy and I hold as well so she is determined to keep getting up and trying to go. It would be much easier for us if we knew she didn't have to go after that first time, but she goes multiple times every night! And of course, there's still the issue of getting her to actuall stop playing during the day and use the potty since she is still wetting her pull-ups at any other time that doesn't involve finding a solution to getting out of what she doesn't want to do. I know that may seem harsh for me to say, but it's 100 percent true. So.. on we go with this potty training. I think we are going to try to go back to wearing undies all day in the next few days and see if that helps her remember to go while she is playing and not thinking about it. In the meantime, if you have great advice to solve our nighttime agony, please suggest away!